132 Juglone Tolerant Plants That Can Grow Near Black Walnut Trees

By Erin Marissa Russell

If your place admit a black walnut tree tree , you ’re likely familiar with opprobrious walnut tree toxicity and the trouble of keep plants near your black walnut tree alive . However , you may not be aware that some plant are not as susceptible to black walnut tree toxicity as others and can successfully be grown near or even right underneath a black walnut tree diagram .

We ’ve compiled plant lists hold various types of works you may count on to flourish underneath sinister walnut tree tree , along with some detail about each plant life . But first , let ’s take a aspect at why it ’s so difficult for most plant to prosper when they turn too near to a dark walnut tree diagram .

black walnut tree growing

Black Walnut Toxicity: Why do plants struggle near black walnut trees?

Every part of a mordant walnut tree diagram contains a chemical call juglone , which is what makes the ontogenesis of other plants so unmanageable near a pitch-black walnut tree tree diagram . The chemic juglone is at its highest concentrations in the black walnut tree rootage , tree bud , and in the shell of the pitch-dark walnuts themselves . Juglone is toxic to a routine of other plant mintage because it inhibits their internal respiration , reducing the level of the energy that enables them to collect food and ingest water .

As rain falls over the smutty walnut Sir Herbert Beerbohm Tree and down through the layers of soil and rock to join the groundwater underneath , it carries routine of juglone with it into the soil . However , juglone is not very water soluble , so it tends to stay in the land surround a fatal walnut Sir Herbert Beerbohm Tree , which is why there seems to be a poor growth zone that stretch forth out from the tree diagram itself . ( The ground holds the most juglone within the black walnut tree diagram ’s canopy dripline because of the theme system as well as crumble leaves and walnut shell that fall there . )

Juglone in the soil is one reason why even chopping down a calamitous walnut tree on your holding will not put an end to the difficulty of growing plants where the tree diagram once stood . Another rationality is that the decaying black walnut tree roots will continue to release more juglone into the soil underground for many years after the Sir Herbert Beerbohm Tree has been cut down .

black walnut tree with text overlay black walnut trees 132 juglone tolerant plants to grow near black walnut trees

Plant sprightliness that is endure from juglone perniciousness can show symptoms in all parts of the plant demonstrate as discolored leaves that turn yellow or brownish , leaf shape distortion , overall decline of the plant ’s health , stunt growth or failure to grow , and wilt leaf . When plants highly sensitive to juglone are exposed to it , they can get ill and die within just a few days or calendar week .

flora with less extreme predisposition could live for a year and display a much more gradual decline . That ’s why if your dimension has a black walnut Sir Herbert Beerbohm Tree , it ’s life-sustaining for you to bang the juglone sensibility of the flora you domesticate and any plants you ’re considering adding to your ingathering . Unfortunately , once juglone wrong occurs , there is no path to treat or reverse it .

With plants that are raw to the outcome of juglone black walnut Tree bring about , experts recommend they be place outside of the tree ’s dripline , or at minimum , at a distance of 50 substructure from the fateful walnut tree . The high concentration of juglone will be within the dripline , but the tree diagram ’s root ( and the juglone ’s issue ) can stretch to a distance that equals the tree ’s height .

Despite these drawback , there are plenty of juglone - resistant plants for gardeners to choose from that are either tolerant of juglone or resistant to its event . The following tilt bear plants you may desire to choose to grow underneath or close to your black walnut tree diagram .

49 Flowers for Planting Under a Black Walnut Tree

Anemone(Anemonastrum )

Aster

False Goat ’s Beard ( Astilbe )

Bee Balm(Monarda )

Begonia

Birthroots ( Trillium )

Black - Eyed Susan(Rudbeckia hirta )

bleed Heart ( Lamprocapnos spectabilis )

Bugleherb ( Ajuga reptans )

Common Bluebell ( Hyacinthoides non - scripta )

Common Cinquefoil ( Potentilla canadensis )

Common Evening Primrose ( Oenothera biennis )

Common Fleabane ( Erigeron )

Common Mallow ( Malva neglecta )

mutual Marigold/ Pot Marigold / Scotch Marigold ( Calendula officinalis )

Common Sneezeweed ( Helenium )

Coneflower ( Echinacea )

Crocus

Daisy Fleabane ( Erigeron anuus )

Darwin Tulip(Tulipa × gesneriana )

Daylily(Hemerocallis )

Dutchman ’s Pipe Vine ( Aristolochia )

Grape Hyacinth(Muscari armeniacum )

Hollyhocks(Alcea rosea )

Honeysuckle(Lonicera ) — Certain miscellany only

Garden Phlox(Phlox paniculata )

Geranium(Pelargonium )

Geum ( Avens )

Greek Valerian / Jacob ’s Ladder(Polemonium caeruleum )

Leather Flower ( Clematis ) [ https://www.gardeningchannel.com/how-to-grow-propagate-clematis/ ]

Lily Turf(Liriope muscari )

Lungwort(Pulmonaria officinalis )

Mistflower ( Conoclinium coelestinum )

Morning Glory(Ipomoea purpurea )

Narcissus

Obedience / Obedient Plant / False Dragonhead ( Physostegia virginiana )

Ox - Eye Daisy / Dog Daisy ( Leucanthemum vulgare )

Pansy(Violas )

Shasta Daisy(Leucanthemum × superbum )

Siberian Iris ( Iris sibirica )

Siberian Squill(Scilla sibirica )

Shrubby St. John ’s Wort ( Hypericum prolificum )

Sweet Woodruff ( Galium odoratum )

Tall Thimbleweed ( Anemone virginiana )

Touch - Me - Not ( Impatiens )

Uniform Bellflower(Campanula carpatica ‘ Uniform ’ )

Virginia Springbeauty ( Claytonia virginica )

Wild Rose(Rosa acicularis )

Yarrow(Achillea millefolium )

Zinnia

26 Ornamental Plants That Will Succeed Under a Black Walnut Tree

Blue Fescue Grass ( Festuca glauca )

Cat Grass / Cock ’s Foot / Orchard Grass ( Dactylis glomerata )

Common Sage(Salvia officinalis )

Coral Bells ( Heuchera )

Ferns

Greenbrier ( Smilax spp . )

Hostas — sure varieties only

Jack - in - the - pulpit ( Arisaema triphyllum )

Kentucky Bluegrass(Poa pratensis )

Lamb ’s Ear / Wooly Hedgenettle ( Stachys byzantina )

Mayapple ( Podophyllum Peltatum )

Oriental Bittersweet / Asian Bittersweet / Chinese Bittersweet ( Celastrus orbiculatus )

Pawpaw ( Asimina triloba )

Pussy Willow/ Glaucous Willow ( Salix discolor )

Pussytoes / Catsfoot / Everlasting / Ladies ’ Tobacco ( Antennaria plantaginifolia )

Sedge ( Carex )

Solomon ’s Seal , Variegated ( Polygonatum odoratum var . pluriflorum )

Spiked Speedwell/ Veronica ( Veronica spicata )

Spiderwort(Tradescantia )

Stonecrops(Sedums )

Sunflower(Helianthus )

Timothy Grass ( Phleum pratense )

Virginia Creeper(Parthenocissus quinquefolia )

Wheat ( Triticum )

White Clover ( Trifolium repens )

Wild Ginger ( Asarum )

18 Fruit and Vegetable Plants That Will Flourish Under a Black Walnut Tree

Beans , include Lima Beans , Snap Beans , and soybean

Beets(Beta )

Black Raspberry(Rubus occidentalis )

Carrots(Daucus carota subsp . sativus )

Cauliflower(Brassica oleracea var . botrytis )

Cherries(Prunus avium )

Common Grape Vine / Wild Grape ( Vitis vinifera )

Corn(Zea may subsp . mays L. )

Garlic(Allium sativum )

Jerusalem Artichoke(Helianthus tuberosus )

Leeks(Allium ampeloprasum var . porrum )

Melons

Onions(Allium cepa )

Parsnip(Pastinaca sativa )

Parsley(Petroselinum crispum )

Squash

39 Shrubs and Trees to Grow Near a Black Walnut Tree

American Beech ( Fagus grandifolia )

American Elm Tree ( Ulmus americana )

Arborvitae Tree ( Thuja )

Black Gum Tree / Sour Gum Tree / Tupelo ( Nyssa sylvatica )

Black Locust Tree(Robinia pseudoacacia )

Blackhaw Viburnum(Viburnum prunifolium )

Canadian Hemlock Tree / Eastern Hemlock Tree ( Tsuga canadensis )

Cigar Tree ( Catalpa )

Corkscrew Willow Tree(Salix Matsudana

Currant Shrub ( Ribes )

Eastern Redbud Tree ( Cercis canadensis )

Flowering Dogwood(Cornus florida )

Forsythia Shrubs [ https://www.gardeningchannel.com/how-to-grow-forsythia/ ]

Hackberry Tree(Celtis occidentalis )

Hawthorn Tree ( genus Crataegus ) [ https://www.gardeningchannel.com/how-to-grow-hawthorn-trees/ ]

Hickory Tree ( Carya )

Honey Locust Tree(Gleditsia triacanthos )

Linden Tree ( Tilia )

Maple Tree ( Acer)—Certain varieties only ( including simoleons maple , Japanese maple , and red maple )

Mohican Viburnum ( Viburnum lantana ‘ Mohican ’ )

Mulberry Tree(Morus )

Ninebark ( Physocarpus )

Oak Tree(Quercus )

Ohio Buckeye ( Aesculus glabra )

Pachysandra Shrub

Pagoda Dogwood(Cornus alternifolia )

Poplar Tree(Populus )

Red Cedar Tree/ Eastern Red Cedar Tree / Virginian Juniper Tree ( Juniperus virginiana )

Rose of Sharon/ Common Hibiscus ( Hibiscus syriacus )

Saskatoon / Serviceberry / Shadbush / Shadblow / Shadwood / Juneberry ( Amelanchier )

Sassafras Tree(Sassafras albidum )

Smooth Hydrangea/ Wild Hydrangea ( Hydrangea arborescens )

Southern Catalpa ( Catalpa bignonioides )

Spindle Tree/ Burning - Bush / Strawberry - Bush / Wahoo / Wintercreeper ( Euonymus )

Sumac ( Rhus )

Sycamore Tree / Buttonwood Tree / Buttonball Tree ( Platanus occidentalis )

Tulip Tree ( Liriodendron )

Weeping Willow Tree ( Salix babylonica )

Witch - Hazel Shrub ( Hamamelis virginiana )

Yamabuki / Nipponese Marigold Bush ( Kerria )

A Few More Things You Should Know About Gardening Around a Black Walnut Tree …

Do n’t compost any part of the black walnut tree tree . Don’t habituate any cloth from the black walnut tree in compost , or you risk poisoning the territory where you distribute the compost instead of enrich it . The juglone that makes a pitch-dark walnut tree and the soil where one has grown so toxic to most other plants will still be present in the organic matter that is produced . This trade embargo on dark walnut tree tree debris goes for the Sir Herbert Beerbohm Tree ’s foliage ( itsleaves ) , barque , branches , twigs , walnuts , walnut shells , and the soil anywhere tight to the tree diagram .

Clean up after your smutty walnut tree to protect the rest of your garden . If you see inglorious walnut seedling crop up up in a neighboring garden bed or glance out over the lawn , be indisputable to displume the baby black walnut tree up and discard them . utilize a broom or rake to clean your belongings of all the whole walnuts , walnut shells , and allow that your walnut tree cut down about once a calendar week , and dispose of what you find in the applesauce .

Even if you have n’t notice any black walnut debris as you go about your days , do a walking about once a week , covering just the vicinity of your black walnut tree trees if the entire property will take too long to inspect weekly . It does n’t take long for the presence of juglone to do serious damage to highly sensitive industrial plant . region of the tree may have been carry to faraway parts of the railyard by bird , squirrels , and other wildlife or knocked loose by a blustery wind or sudden storm , so you may not even know they ’re on the ground until you depend for them .

If your garden need some redundant help , try conjure bottom or container gardens and rich soil amendments . choose plants that stomach juglone well is a giant step toward improving the overall health of your garden . But sometimes you just really want to nourish a plant that ’s sensible to juglone , or you ’ve been experiencing trouble raise plants even outside the black walnut tree ’s dripline . There are actions you could take to improve the soil your plant develop in and decrease the juglone it contains . Constructing enkindle bedswill lease you grow your plant without the Sir Herbert Beerbohm Tree ’s rootage system sneaking in from underneath . It also help to keep the earth near the inglorious walnut tree well aerate , and apply microbe - enhancing soil amendments like composted give orwell - waste manure .