Tag Archives: Missouri Trees

Proper Pruning in Late Winter

Proper pruning in late winter leads to strong, lush trees and shrubs in the springtime

Pruning cuts are made slightly beyond the branch collar.

Pruning cuts are made slightly beyond the branch collar. COURTESY OF JOHNSON COUNTY K-STATE RESEARCH & EXTENSION

BY DENNIS PATTON for Kansas City Star (MO), FEBRUARY 12, 2020 03:42 PM

Does pruning strike more fear in your heart than a trip to the doctor? Pruning sounds complicated, but once you understand the basic guidelines, the rest falls into place.

PROPER PRUNING IN LATE WINTER – KNOW WHERE TO MAKE THE CUT

Most people hesitate knowing where to make the cut. Discerning “where” does not mean which specific limb needs to be removed. It means where precisely on the branch the cut is to be made.

Every pruning cut should be made at the point where there is another branch, fork, crotch angle or new bud forming. Making the cut at a growth point reduces the chance of decay and uncontrolled growth. Directing new growth is the goal of pruning, not merely pruning to remove growth.

Pruning to this juncture removes tall overgrown limbs, reduces plant height and thins out the plant. When extreme weather impacts our neighborhoods, pruning will reduce the weight of snow, ice and wind, which can lead to branch failure.

The energy that once supported the removed limb is now channeled into the growth of the remaining limbs. It is important to understand the concept of directional pruning.

The direction of the remaining limb or bud will point to where the growth will head. Attempting to control height? Prune to a side-pointing limb. Need to reduce spread? Prune to an upward pointing limb. Tired of the low-hanging limb hitting you in the face? Find a branch growing upward. See how this works?

Removing a limb back to another branch thins out a tree or shrub for better light penetration and less wind resistance. Not only does this apply to shade trees, but flowering and fruit trees as well. More sunlight penetrating the plant will lead to more flowering and fruit development.

HOW TO MAKE THE CUT

Now that you are confident in knowing where to make the cut, the next step is to do it properly. Pruning is an injury to the plant or tree, wounding the wood. The goal is to quickly heal the wound with a correctly made cut.

Pruning cuts are made slightly beyond the branch collar, where a layer of cambium growth has the ability of rapidly sealing off the cut. The branch collar is the raised, rough growth of bark tissue at the crotch angle. Remember, the cut is always made back to a branch angle.

Try to avoid cutting to the outside of the branch collar as it will leave a slight bump. We want to steer clear of creating a stub, a longer piece of wood sticking out. Stubs do not heal and lead to decay or uncontrolled growth. Cutting too close results in a flush cut, which removes the bark collar, leaving a bigger wound. A larger wound is slower to seal and increases the chance of decay.

Tree pruning is done in late winter before new growth. The lack of foliage reveals problem areas, making it easier to know which limbs to remove. Spring is a time of rapid growth for quick recovery. Now go forth and prune. I have confidence in your abilities.

Dennis Patton is a horticulture agent with Kansas State University Research and Extension. Got a question for him or other university extension experts? Email them to [email protected].

https://www.kansascity.com/living/liv-columns-blogs/kc-gardens/article240239351.html


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Anatomy of a Tree

Leaves

Leaves carry out photosynthesis, making food for the tree and releasing oxygen into the air. And this tells us much about their shapes. For example, the narrow needles of a Douglas fir can expose as much as three acres of chlorophyll surface to the sun.

The lobes, leaflets, and jagged edges of many broad leaves have their uses, too. They help evaporate the water used in food-building, reduce wind resistance and even provide “drip tips” to shed rain that, left standing, could decay the leaf.

Branches and Twigs

Branches and twigs grow out of the tree trunk and serve as support structures for leaves, flowers, and fruit. Branches are the main “limbs” of the tree, whereas the twigs are smaller and come off of the branches. They also transport materials between the trunk and the leaves.

Trunk

The trunk of a tree is made up of five different layers.

Anatomy of a Tree
  1. The outer bark is the tree’s protection from the outside world. Continually renewed from within, it helps keep out moisture in the rain and prevents the tree from losing moisture when the air is dry. It insulates against cold and heat and wards off insect enemies.
  2. The inner bark, or “phloem,” is the pipeline through which food is passed to the rest of the tree. It lives for only a short time then dies and turns to cork to become part of the protective outer bark.
  3. The cambium cell layer is the growing part of the trunk. It annually produces new bark and new wood in response to hormones that pass down through the phloem with food from the leaves. These hormones, called “auxins,” stimulate growth in cells. Auxins are produced by leaf buds at the ends of branches as soon as they start growing in the spring.
  4. Sapwood is the tree’s pipeline for water moving up to the leaves. Sapwood is new wood. As newer rings of sapwood are laid down, inner cells lose their vitality and turn to heartwood.
  5. Heartwood is the central, supporting pillar of the tree. Although dead, it will not decay or lose strength while the outer layers are intact. A composite of hollow, needlelike cellulose fibers bound together by a chemical glue called lignin, it is in many ways as strong as steel. Set vertically, a 1″ x 2″ cross-section that is 12″ long can support twenty tons!

Roots

roots

Contrary to popular belief, tree roots are typically found in the top three feet of the soil. As well, they expand well beyond the dripline, often occupying an area two to four times the size of the tree crown.

A tree’s root system works to absorb water and minerals from the soil, anchor the tree to the ground, and store food reserves for the winter. It is made up of two kinds of roots: large perennial roots and smaller, short-lived feeder roots.

Want to read more of our articles? Click here to read about the benefits of trees!


“Anatomy of a Tree.” Advanced Search-The Tree Guide at Arborday.org, The Arbor Day Foundation, www.arborday.org/trees/TreeGuide/anatomy.cfm.


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Deer Damage to Trees and Landscaping

One of the most frustrating things to deal with this time of year is having a deer snack on your beloved plants. Even if you are the type of person to tolerate deer damage because you love them, beware! Deer are creatures of habit. Once they feel safe and find a tasty snack, they will visit regularly.

An increase in deer populations and a decrease in their natural habitat have set up a situation in which your favorite landscapes become alternative food sources for deer.  As winter approaches and food sources become scarce, feeding on leaves, stems, and buds of plants becomes more apparent. Male deer also cause damage by rubbing their antlers along the trunks of trees, stripping off the bark. Trees and shrubs can suffer permanent damage. Deer should always be discouraged immediately.

deer damage to tree

There are four ways to discourage deer: Fencing, repellents, predators, and deer-resistant plants. 

Fencing requires you to enclose your entire yard with a fence at least six feet tall. This is not necessarily an aesthetically pleasing option, nor is it cost-effective. In some cases, you can put barrier fencing around these individual plants. While it is still unsightly, protecting a tree while it is young is important. 

Homemade and commercial repellents are common control methods to discourage deer, but their effectiveness varies. Snow and rain can wash them away, so frequent applications are needed. Also, if food sources are scarce, deer may simply ignore the repellents, despite the taste or odor.

As far as predators go, a noisy dog is an excellent deer deterrent. If you don’t have a dog, you can hang shiny tape from branches, or place inflated balls and other moving objects in the yard to startle the deer with sudden movement. You’ll have to rotate these frequently, however, or deer will soon realize that they are not in danger from these objects.

If they are hungry enough and food is scarce enough, deer will eat almost anything. However, there are a number of plants that deer don’t find particularly palatable. Using these plants in your landscape is often the most cost-effective, least time-consuming, and most aesthetically pleasing solution.

Below is a list of trees and shrubs not favored by deer. However, the resistance of any plant species may change due to environmental factors.

Always check to make sure that a plant is not invasive to your area before you plant it! 

TREES

Common Name                                                      Scientific Name

American chestnut                                             Castanea dentata

Bald-cypress                                                     Taxodium distichum

Beech                                                                Fagus spp.

Birch                                                                  Betula spp.

Catalpa                                                              Catalpa spp.

Dawn redwood                                                  Metasequoia glyptostroboides

Giant arborvitae                                               Thuja plicata

Ginkgo                                                              Ginkgo biloba

Ironwood                                                           Ostrya virginiana

Japanese tree lilac                                            Syringa reticulata

Larch                                                                 Larix spp.

Honey-locust                                                    Gleditsia triacanthos

Redbud                                                             Cercis canadensis

Sassafras                                                          Sassafras albidum

Smoketree                                                         Cotinus spp.

Sourwood                                                          Oxydendrum arboreum

Sweetgum                                                         Liquidambar styraciflua

Spruce                                                              Picea spp.

Sycamore                                                         Platanus occidentalis

Tulip tree                                                          Liriodendron tulipifera

 

Shrubs

Common Name                                                       Scientific Name

Boxwood                                                              Buxus spp.

Leatherwood                                                       Dirca palustris

Coralberry/Snowberry                                         Symphoricarpos spp.

       * Poisonous, do not eat!

Forsythia                                                             Forsythia spp.

Japanese kerria                                                  Kerria japonica

Common lilac                                                     Syringa vulgaris

Oregon grape-holly                                            Mahonia aquifolium

Smokebush                                                       Cotinus spp

Spicebush                                                         Lindera benzoin                     

Spirea                                                               Spiraea spp.

Carolina allspice                                              Calycanthus floridus

Witch hazel                                                      Hamamelis spp.

 

Ground Covers

Common Name                                                      Scientific Name

Barren strawberry                                              Waldsteinia fragarioides

Bergenia                                                            Bergenia cordifolia

Bugleweed                                                         Ajuga reptans

Bunchberry                                                       Cornus canadensis

Catmint                                                              Nepeta x faassenii

Epimedium                                                        Epimedium spp.

Ferns                                                                 Numerous species

Hens and chicks                                               Sempervivum spp.

Juniper                                                               Juniperus spp.

Lady’s mantle                                                    Alchemilla mollis

Lamium                                                              Lamium spp.

Lily turf                                                              Liriope spicata

Lungwort                                                           Pulmonaria spp.

Mosses                                                              ————–

Pachysandra                                                      Pachysandra spp.

Potentilla                                                            Potentilla spp

Sedum                                                                Sedum spp.

Snow-in-summer                                                Cerastium tomentosum

Sweet woodruff                                                   Galium odoratum

Vinca                                                                   Vinca minor

Violet                                                                    Viola spp.

Wild ginger                                                           Asarum canadense

Wild strawberry                                                    Fragaria spp

 

Perennial Vines

Common Name                                                      Scientific Name

Akebia                                                                Akebia quinata

Bittersweet                                                         Celastrus scandens

Clematis                                                             Clematis spp.                          

Crimson glory vine                                              Vitis coignetiae

Silver lace vine                                                  Polygonum aubertii

Trumpet creeper                                               Campsis radicans

Virginia creeper                                                Parthenocissus quinquefolia

 

Hardy Bulbs

Common Name                                                      Scientific Name

Autumn crocus                                                  Colchicum autumnalis

Crown imperial                                                  Fritillaria imperialis

Daffodil                                                               Narcissus spp.

Grape hyacinth                                                  Muscari spp.

Glory-of-the-snow                                             Chionodoxa luciliae

Ornamental onion                                              Allium spp.

Siberian scilla                                                   Scilla sibirica

Snowdrops                                                       Galanthus nivalis

Winter aconite                                                  Eranthis hyemalis

 

Annuals and Biennials

Common Name                                                      Scientific Name

Ageratum                                                           Ageratum houstonianum

Alyssum                                                             Lobularia maritima

Candytuft                                                          Iberis sempervirens

Forget-me-not                                                   Myosotis spp.

Four o’clock                                                       Mirabilis jalapa

Foxglove                                                           Digitalis purpurea

Heliotrope                                                         Heliotropium arborescens

Larkspur                                                            Delphinium spp.

Lobelia                                                               Lobelia spp.

Marigold                                                            Tagetes spp.

Mexican sunflower                                          Tithonia rotundifolia

Mimulus                                                             Mimulus spp.

Nasturtium                                                        Tropaeolum majus

Petunia                                                              Petunia spp.

Poppy                                                                Papaver spp.

Salvia                                                                Salvia spp.

Snapdragon                                                      Antirrhinum majus

Stocks                                                               Matthiola spp.

Sunflower                                                         Helianthus annuus

Sweet William                                                  Dianthus spp.

 

Hardy Perennials

Common Name                                                    Scientific Name

Monkshood                                                       Aconitum spp.

Anemone                                                           Anemone spp.

Artemisia                                                           Artemisia spp.

Astilbe                                                                Astilbe spp.

Bee Balm                                                           Monarda spp.

Bergenia                                                             Bergenia cordifolia

Black-eyed Susan                                              Rudbeckia hirta

Butterfly weed                                                   Asclepias tuberosa

Columbine                                                         Aquilegia spp.

Coreopsis                                                          Coreopsis spp.

Cranesbill                                                          Geranium spp.

Fleabane daisy                                                  Erigeron x hybridus

Foam flower                                                      Tiarella cordifolia

Gentian                                                             Gentiana spp.

Geum                                                                Geum spp.

Goldenrod                                                         Solidago spp.

Hellebore                                                           Helleborus nigra

Hens & chicks                                                   Sempervivum spp.

Hibiscus                                                             Hibiscus spp.

Iris                                                                      Iris spp.

Jacob’s ladder                                                   Polemonium caeruleum

Rose campion                                                   Lychnis coronaria

Marsh marigold                                                Caltha palustris

Meadow rue                                                     Thalictrum spp.

Meadowsweet                                                  Filipendula spp.

Peony                                                                Paeonia spp.

Phlox                                                                 Phlox divaricata

Pinks                                                                 Dianthus spp.

Purple coneflower                                             Echinacea purpurea

Rockcress                                                         Arabis caucasica

Russian sage                                                   Perovskia atriplicifolia

Salvia                                                               Salvia spp.

Sedum                                                              Sedum spp.

Shasta daisy                                                     Chrysanthemum

Snakeroot                                                         Eupatorium rugosum

Sneezeweed                                                    Helenium autumnale

Snow-in-summer                                             Cerastium tomentosum

Speedwell                                                        Veronica spp.

Toadflax                                                            Linaria spp.

Valerian                                                            Valeriana officinalis

Violet                                                                 Viola spp.

Yarrow                                                               Achillea spp.

 

 

Herbs

Common Name                                                       Scientific Name

Angelica                                                             Angelica archangelica

Artemisia                                                           Artemisia vulargis

Basil                                                                   Ocimum basilicum

Borage                                                               Borago officinalis

Catmint                                                              Nepeta x faassenii

Chamomile                                                        Matricaria spp.

Chives                                                               Allium schoenoprasum

Comfrey                                                            Symphytum x rubrum

Dill                                                                      Anethum graveolens

Fennel                                                               Foeniculum vulgare

Feverfew                                                           Tanacetum parthenium

Germander                                                      Teucrium chamaedrys

Hyssop                                                              Hyssopus officinalis

Lamb’s ears                                                      Stachys byzantina

Lavender                                                          Lavandula angustifolia

Lemon balm                                                    Melissa officinalis

Mint                                                                  Mentha spp.                                       

Mullein                                                             Verbascum spp.

Oregano                                                           Origanum vulgare

Parsley                                                             Petroselinum spp.

Rosemary                                                        Rosmarinus officinalis

Rue                                                                   Ruta graveolens

Sage                                                                 Salvia officinalis

Savory                                                              Satureja montana

Tansy                                                                Tanacetum coccineum

Thyme                                                              Thymus spp.


Works Cited: 
Plants not favored by deer. (n.d.). Retrieved November 15, 2019, from https://www.mortonarb.org/trees-plants/tree-and-plant-advice/horticulture-care/plants-not-favored-deer.

Click here to view our Certified Arborists in Springfield MO!

Please call the office of All About Trees at (417)863-6214 to schedule an estimate. Business hours are Monday-Friday 8:00 am – 4:00 pm.

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Seasonal needle drop

Seasonal Needle Drop in Trees

We’ve noticed an increase in calls concerning yellowing needles in our customer’s evergreens, especially white pines. However, the “problem” is simply seasonal needle drop in trees. This is a normal and natural process in evergreen trees. Every year, evergreens experience a seasonal needle drop that is a normal part of the plant’s cycle. Older needles on the inside of evergreen trees are shed each fall after they turn yellow, brown, or reddish-tan in color. Sometimes this natural process is very subtle and goes unnoticed because only the innermost needles are affected. The change can be gradual, or, with some species, quite rapid. Seasonal needle drop in trees can cause concern to homeowners who are not familiar with this natural occurrence.

White pines show the most dramatic needle drop change. Their annual loss of needles can be especially alarming, as the number of yellow needles can outnumber the tree’s green growth. This can be very worrying to a tree owner! Typically, white pines will retain needles for three years, but in autumn, 2-or-3-year-old needles will change color and drop, leaving only the current season’s growth still attached.  

So if you are seeing your evergreen trees drop yellow needles, this is part of their natural process. However, if you are seeing widespread decay within your tree, then please call the office to schedule an estimate at the phone number listed below. We will be more than happy to take a look at your trees to ensure their health and well-being. 

To learn more specifics on seasonal needle drop, please visit https://www.mortonarb.org/trees-plants/tree-and-plant-advice/horticulture-care/seasonal-needle-drop

 

Click here to view our Certified Arborists in Springfield MO!

Please call the office of All About Trees at (417)863-6214 to schedule an estimate. Business hours are Monday-Friday 8:00 am – 4:00 pm. If we miss your call, please leave us a detailed voicemail message with your name, address, phone number, email, and your tree concerns. 

Source

“Seasonal Needle Drop.” Seasonal Needle Drop | The Morton Arboretum, www.mortonarb.org/trees-plants/tree-and-plant-advice/horticulture-care/seasonal-needle-drop#:~:text=Every%20year%2C%20evergreens%20experience%20a,part%20of%20the%20plant’s%20cycle.&text=Many%20evergreen%20needles%2C%20as%20they,with%20some%20species%2C%20quite%20rapid.

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Arborist pruning a tree

Mature Tree Pruning

Mature tree pruning removes dead and dying branches to maintain plant health and safety

All About Trees is a full-service tree care company, and one of our services is the pruning of mature trees. Thinning and raising are two types of tree pruning that should be performed periodically. It works to improve the form and shape of the plant, to eliminate interference with objects and structures, and to compensate for structural weaknesses. Thinning is the removal of live branches to reduce density. Research shows that thinning significantly reduces wind resistance and subsequent storm damage. This leads to healthier trees less prone to breakage, which will lead to a longer-lasting tree.

The pruning of lower branches, known as raising, can be used to increase the amount of light to turfgrass and ground covers beneath the crown of a tree. This will allow homeowners to improve the health of other plants within their yards, and improve tree health. In evergreen trees experiencing fungal issues, a small crown raise can be used to increase the airflow under the tree to reduce fungus. This also allows the tree limbs to be lifted off the ground, making the direct spread of fungus more difficult.

All About Trees arborists are trained to evaluate the condition of your trees and determine the type(s) of pruning required. We aim to balance your goals and those of managing plant health and safety. If you would like an estimate to have your trees pruned, please call the office at 417-863-6214. Our office hours are Monday-Friday, 8:00 am – 4:00 pm. If you miss us, please leave us a detailed voicemail message with your name, address, phone number, email, and tree concerns.

To learn more about the services we offer, please go to our Services page!

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Where to See Fall Color in Missouri

Predicting the peak of fall color can be difficult. Missouri is blessed with a great variety of trees, shrubs, and vines. Their leaves turn at different times, so Missourians enjoy a fall color season that may last four to six weeks. Sassafras, sumac, and Virginia creeper are some of the earliest to change, beginning in mid-September. By late September, black gum, bittersweet, and dogwood are turning.

The peak of fall color in Missouri is usually around mid-October. This is when maples, ashes, oaks, and hickories are at the height of their fall display. Normally by late October, the colors are fading and the leaves beginning to drop from the trees. Fall color is usually finished by the middle of November.

The progression of color change starts earliest in north Missouri and moves southward across the state. Generally, the color change is predictable, but it can vary from year to year. Much depends on the weather.

Where’s the Best Place?

You can enjoy Missouri’s fall color almost anywhere.

  • For spectacular vistas, choose routes along rivers with views of forested bluffs, and along ridges with sweeping scenes of forested landscapes. In particular, the James River has spectacular fall sights.
  • On a smaller scale, drive on back roads, hike, or take a float trip under a colorful forest canopy on a clear, blue-sky day. Visit MDC Conservation Areas and Missouri State Parks.
  • Even treeless areas, such as prairies and roadsides, display beautiful shades of gold, purple, olive, and auburn with autumn wildflowers, shrubs, and curing, rustling grasses.
  • If you can’t get out of town, enjoy places with mature trees, such as older neighborhoods, parks, and even cemeteries.

Find events on your route

The Missouri Division of Tourism’s online calendar is packed with events happening all across Missouri this fall. Find those along your preferred routes.


MDC Discover Nature. (2019). Fall Colors. [online] Available at: https://nature.mdc.mo.gov/discover-nature/fall-colors [Accessed 26 Sep. 2019].

All About Trees is caring for Springfield’s urban forest, one tree at a time. 

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Emerald Ash Borers

Emerald Ash Borers : Pest 101

Be on the lookout for emerald ash borers. The emerald ash borer (EAB) is a serious threat to ash trees in Missouri. This invasive pest will eventually kill unprotected ash trees. Many trees can be saved with the careful use of systemic insecticides. However, not all ash trees should be treated, and for many locations the start of treatments should be delayed. This guide will assist you in making decisions about protecting your trees from this invasive pest. Find more information at eab.missouri.edu.

In the Ozarks, we are proud of our trees. But a small insect is putting our beautiful ash trees at risk. The emerald ash borer is an invasive pest that will eventually kill unprotected ash trees. Treating your tree early can help save it.

Here are a few signs to know if emerald ash borers have affected your tree:

  • D-shaped exit holes about 1/8″ wide.
  • Winding, s-shaped tunnels just under the bark.
  • New sprouts on the branches and lower trunk.
  • Increased woodpecker activity on the tree.
  • Sparse leaves and/or branches dying in the upper part of the tree.

To identify when is the best time to treat or cut your ash tree, check out this PDF from the Department of Conservation.

 

 


 

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All About Trees Plant Health Care Program

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Jumping Oak Gall

Jumping Oak Gall FOREST HEALTH ALERT From the Missouri Department of Conservation

Tree species affected: White oak (Quercus alba) primarily, and some other white oak group species.

Concerns: Leaves on entire crowns of white oak trees turning brown in late spring. In some areas, whole hillsides appear brown.

Description: High populations of a very tiny, native, stingless wasp (Neuroterus sp.) cause pinhead-size galls (abnormal plant growths) to form on the undersides of leaves. Each round, button -like gall contains one wasp larva. Starting at the margins, brown, scorch-like areas appear on leaves where many galls are present. In more severe cases, leaves curl up, turn black, and drop early from trees. Effects of the damage become noticeable in late spring or early summer and remain visible until fall.

Most galls drop from leaves in early summer. Brown pockmarks remain where galls had been attached. Fallen galls are sometimes observed to “jump” due to vigorous movements of larvae within, much like moth larvae of “Mexican jumping beans.” This behavior allows galls to fall deeper into grass and leaf litter where they are sheltered throughout the coming winter.

Many species of gall wasps have two generations per year. It is assumed that the jumping oak gall wasp in Missouri has a similar life history with one generation lasting only a few weeks in early spring and rarely being noticed. The second generation extends from spring through the following winter and causes most of the leaf damage. Outbreaks typically last for one or two years and then fade away as natural controls reduce gall wasp numbers again.

Similar Leaf Issues: In years with cool wet springs, fungal diseases can be abundant on trees and may also cause leaf browning. Anthracnose is common on white oak foliage in those conditions. Botryosphaeria twig canker causes leaves on infected small branches to wilt and turn brown, which results in “flagging” in the canopy during the summer. Typically, twig bark shrivels and turns brown where the canker occurs, near the junction with healthy tissue.

Recommendations: Galls and fungi that affect oak leaves rarely have a significant impact on tree health. Nearly all trees will recover, even if all leaves are brown. Controls are not warranted. By the time the damage is observed, any opportunity to treat has already passed for that year, and populations are likely to decline naturally. However, severe leaf damage stresses trees, particularly if most leaves on a tree are killed which results in a second flush of leaves emerging in summer. The best tactic is using good tree care practices that reduce stress (mulching, watering during drought, avoiding wounds due to lawnmowers and trimmers).

Questions? Contact your local forester with the Missouri Department of Conservation. Find contact information for your county and more at mdc.mo.gov.


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Black Walnut Trees

BLACK WALNUT
Juglans nigra

Family

Juglandaceae (walnuts)

Description

A large tree with a straight trunk and rounded, open crown. The nuts, spicy odor, large feather-compound leaves, and chambered pith in the twigs help identify it.

Leaves alternate, compound, 1–2 feet long, with 11–23 leaflets. Leaflets 3–5 inches long, 1–2 inches wide, broadest below the middle, the end leaflet smaller than side ones or absent; margin toothed; upper surface yellow-green; lower surface paler, hairy.

Bark grayish-brown or black, grooves deep, ridges broad with sharp or rounded edges, roughly forming diamond-shaped patterns, chocolate-colored when cut.

Twigs stout, rigid, brown to gray-brown, hairy; end bud about ½ inch long; pith light brown, chambered when cut lengthwise.

Flowers April–May. Male flowers in catkins, female flowers in a short spike on the same tree.

Fruits September–October, usually single or in pairs. A green rounded husk, 1½–2½ inches across, covers the round, hard, bony, dark brown or black nut. The kernel is oily, sweet, and edible.

Similar species: Butternut, or white walnut (Juglans cinerea), is scattered and declining in the eastern two-thirds of Missouri, mostly in low and moist soils. It has rather cylindrical fruits, and the nut inside has 4 lengthwise ribs; leaf scars have the upper edge straight (not notched), bordered by a well-defined velvety ridge. The mild-tasting English (or Persian) walnut is the species J. regia. It is native to Eurasia and when cultivated in Missouri does not escape. The state of California grows nearly all of the US commercial supply of English walnuts. Walnuts are in the same family as hickories and pecans.

Key Identifiers

 

  • Leaves long, alternate, feather-compound
  • Leaflets 11–23, toothed
  • Fruits distinctive
  • Bark grayish, deeply grooved with rather diamond-shaped patterns, ridges broad
  • Twigs stout, with chambered pith
  • Distinctive spicy odor
Size

Height: to 90 feet.

Missouri is the world’s top producer of black walnuts, which are used in baking and confections, and even pickled whole! It would be eaten by more people it getting the nutmeats out of the nut was easier. Walnut is the finest wood in the world. In the past, warm brown hardwood was used lavishly in homes, barns, and fences. Today it’s used for furniture, veneer, and gunstocks.

The nuts are eaten by mice and squirrels. The leaves are eaten by larvae of luna moths, regal moths, and others. The presence of such caterpillars naturally attracts warblers and other insectivorous birds. Walnut trees produce a chemical, juglone, that stunts or kills other plants growing nearby.

Black walnut has been designated as Missouri’s official state tree nut. Most of the state’s large, old walnut trees were felled in previous decades for lumber and other uses, yet the superb wood from this species remains in high demand. Young landowners have been planting walnuts in hopes of harvesting them in future decades. Several serious pests may endanger the health of Missouri’s walnuts; educate yourself about thousand cankers disease (TCD), ambrosia beetles, walnut anthracnose, and other diseases, and never, ever transport firewood.

HABITAT AND CONSERVATION

Black walnut grows throughout Missouri in a variety of soils. It grows best on the deep, well-drained soils of north Missouri and on alluvial (river-deposited) soils in the south. Every farm in the state should grow some walnut trees. In addition to providing quality wood, the walnut’s nutmeats are a major industry in the state. Even the hard shells can be used as an abrasive and to make activated carbon.

It is a common misconception that tree services will pay the customer for removal of black walnut trees, due to their high-quality wood. However, this is not true. We at All About Trees will not pay to remove your black walnut tree.

Black Walnut. (n.d.). Retrieved October 10, 2017, from https://nature.mdc.mo.gov/discover-nature/field-guide/black-walnut


Springfield, MO Tree Alert- Our Certified Arborists

To view a list of our Certified Arborists, click here!

Please call the office of All About Trees at (417) 863-6214 or fill out a contact request form to schedule an appointment for an estimate.

Phone: (417) 863-6214
Address: 3427 W. Farm Road 146, Springfield, MO 65807

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Watch Out for Japanese Beetles!

Springfield, MO Tree Alert – Japanese Beetles

Tree species affected: Japanese beetles are known to feed on over 300 plant species. Linden (basswood), elm, crabapple, sycamore (planetree), sassafras, plum, cherry, and bald cypress are commonly damaged, as well as grape and rose.

Concerns: Lacy, skeletonized leaves. Partial or entire defoliation.

Description: Japanese beetles feed on the upper surface of leaves, leaving behind veins. Damage is frequently seen near the top of the tree or plant first. These beetles often feed in groups.

Insecticides are not compatible with trying to maintain a pollinator-friendly yard and should never be used on flowering plants or trees that will attract bees and other pollinators.

Frequently Asked Questions

What is the lifecycle of the Japanese beetle?

Japanese beetles spend most of their one-year lifecycle under-ground as a white, c-shaped grub. These grubs feed on grass roots and can damage turf if populations are high. Grubs pupate in late spring and emerge from the ground as adult beetles around mid-June in Missouri. These beetles congregate on host plants, particularly those in full sun. Japanese beetles congregate through a combination of pheromones released by females and floral scents emitted by the damaged host. After mating, each female beetle lays 40-60 eggs in the soil over the course of her 30-45 day lifespan. These eggs hatch into grubs in July and August. Most adult Japanese beetles are gone for the year by mid-August.

Will Japanese beetles kill my trees?

Healthy, established trees can typically tolerate a heavy amount of feeding damage. However, this damage is a source of stress for trees. You can help your trees by watering them 2-3 times per month during dry times to avoid additional stress from drought. A good rule of thumb is ten gallons of water per inch of a tree’s diameter.

Should I use a Japanese beetle trap?

Be cautious when using Japanese beetle traps as they are very effective at bringing beetles in from areas well outside of your yard. Traps don’t catch all the beetles they attract, so nearby plants may be heavily damaged. If you decide to use a trap, place it at least 100 feet away from the plants you want to protect. Dispose of trapped beetles frequently by dropping them into a bucket of soapy water.

If I control the Japanese beetle grubs in my lawn, will I have fewer beetles next year?

Controlling Japanese beetle grubs in your lawn won’t significantly reduce the number of beetles you see next year. Japanese beetles are strong fliers and can continue to fly in from neighboring areas over a mile away. Grub control may have more of an impact if you live in a forested area where turf grass is uncommon.

How can I control Japanese beetles?

For light infestations on shrubs and young trees, handpicking is an effective method of control. Beetles are typically sluggish and easy to capture early in the morning. Shake stems and branches with Japanese beetles over a bucket of soapy water.

Several contact insecticides are available for control of Japanese beetle adults (e.g. acephate, carbaryl, cyfluthrin, permethrin); check the label to confirm Japanese beetles and your plant species are listed. These chemicals may need to be reapplied at labeled intervals, especially in hot or rainy weather. Organic products containing azadiractin and spinosad are effective deterrents for a few days. Neem oil may be useful in deterring beetles from feeding if used at the first sign of damage.

Systemic insecticides, such as those containing imidacloprid, can be applied as a soil drench to protect some types of trees from Japanese beetles (follow all label restrictions). However, this product would need to be applied in early June in order to be effective since it can take 4-6 weeks for a tree to translocate the chemical from the soil to the leaves.

Due to impacts on pollinators, systemic insecticides should not be applied before or during the bloom period on any plant. In addition, use of many IMIDACLOPRID products (e.g. Bayer Advanced Tree & Shrub Insect Control) is NOT ALLOWED on LINDEN (BASSWOOD), a common host tree of Japanese beetles. Product labels contain new restrictions due to frequent misuse and impacts on pollinators.

Are there any biological controls for Japanese beetles?

No biological controls are currently available for managing adult Japanese beetles. Two products are available for biological control of Japanese beetle grubs in the soil. Neither product is 100% effective.

  • Milky spore (milky disease bacteria) is a long-term control technique that can help reduce grub populations in 2-3 years. Introduce milky spore into several spots in your yard in a grid pattern. Once in the soil, the spores will be present for many years. Milky spore requires specific temperature and moisture conditions to infect grubs, so effectiveness varies.
  • Nematodes of the Heterorhabditis strains will attack grubs. Because soil moisture is critical for nematode survival, it can be difficult to maintain proper conditions for nematodes and avoid overwatering plants. Nematodes need to be applied every year up to three times during the grub stage.

What should I do next year to protect my trees?

Keep an eye out in mid-June for Japanese beetles. Handpick beetles off small or newly planted trees. Preventing early feeding damage can protect trees in the following weeks. If populations are too high to remove by hand, spray an insecticide labeled to control Japanese beetles on your particular tree species. Repeat, if needed, at labeled intervals.

For large established trees, help reduce stress caused by Japanese beetle feeding through good tree care practices: water trees 2-3 times per month during drought conditions, avoid wounding by mowers and weed trimmers, and, if used, keep mulch rings no deeper than 3”.

Do weather conditions impact Japanese beetle populations?

Drought conditions in July and August can lead to the death of many newly hatched grubs. During severe droughts, irrigated areas and some low-lying wet locations may be the only places that grubs survive. Harsh winter conditions can also be a limiting factor in Japanese beetle grub survival. Grubs are killed when soil temperatures reach 15°F or when soils remain near 32°F for two months, (snow cover can significantly insulate soils from frigid air). A cold winter without much snow could greatly reduce the following year’s adult beetle population.

Forest Health Program
Missouri Department of Conservation
To contact your local forester, see the local contact box athttp://mdc.mo.gov

Our Certified Arborists

To view a list of our Certified Arborists, click here!

Please call the office of All About Trees at (417) 863-6214 or fill out a contact request form to schedule an appointment for an estimate.

Phone: (417) 863-6214
Address: 3427 W. Farm Road 146, Springfield, MO 65807

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