What plants are generaly safe to plant close to a Black Walnut tree?

Do you have a Black Walnut tree in your landscape and are wondering what can be planted near it? As you probably know, Walnut trees produce a chemical called juglone which is toxic to some plants. Yellowing or wilting leaves are symptoms of juglone sensitivity and eventually death is followed. Juglone is found in the leaves, bark, and even the roots of Walnut trees. The area directly below the tree’s canopy is where most plants that are sensitive to juglone will not survive, although the roots of the Walnut tree will also contain juglone which may also hinder the growth of nearby plants.

Please remember that this list is strictly a guide.

Trees Tolerant to Juglone

Most maples except Silver maple (Acer spp)
Eastern Red Cedar (Juniperus virginiana)
Ohio Buckeye (Aesculus glabra)
Goldenrain Tree (Koelreuteria paniculata)
Serviceberry, Shadblow (Amelanchier)
Sweetgum (Liquidambar styraciflua)
Pawpaw (Asimina triloba)
Yellow Poplar (Liriodendron tulipifera)
River Birch (Betula nigra)
Black Gum (Nyssa sylvatica)
Hickory (Carya spp)
Virginia Pine (Pinus virginiana)
Catalpa (Catalpa bignoniodes)
Sycamore (Platanus occidentalis)
Eastern Redbud (Cercis canadensis)
Black Cherry (Prunus serotina)
Fringetree (Chionanthus spp.)
Callery Pear (Pyrus calleryana)
Flowering Dogwood (Cornus florida)
Oak species (Quercus spp)
Dogwood (Cornus alternifolia)
Staghorn Sumac (Rhus typhina)
Hawthorne (Crataegus spp)
Black Locust (Robinia pseudoacacia)
Persimmon (Diosypros virginiana)
Sassafras (Sassafras albidum)
American Beech (Fagus grandifolia)
Arborvitae (Thuja occidentalis)
White Ash (Fraxinus americana)
Canada Hemlock (Tsuga Canadensis)
Honeylocust (Gleditsia triacanthos)
American Elm (Ulmus americana)
Carolina Silverbell (Halesia caroliniana)
Blackhaw Viburnum (Viburnum prunifolium)

Shrubs Tolerant to Juglone

Barberry (Berberis spp)
Hazelnut (Corylus americana)
Daphne (Daphne spp)
Forsythia (Forsythia spp)
Witchhazel (Hamamellis spp)
Rose of Sharon (Hibiscus syriacus)
Snowball Hydrangea (Hydrangea arborescens)
St. Johnswort (Hypericum prolificum)
American Holly (Ilex opaca)
Juniper (Juniperus spp)
Spicebush (Lindera benzoin)
Mockorange (Philadelphus spp)
Exbury Hybrid Azalea “Gibraltar” & “Balzac”
Pinxterbloom Azalea (Rhododendron periclymenoides)
Sumac (Rhus copallina)
Smooth Sumac (Rhus glabra)
Current (Ribes spp)
Black Raspberry (Rubus occidentalis)
Elderberry (Sambucus Canadensis)
Maple-leaved Viburnum (Viburnum acerifolia)
Koreanspice Viburnum (Viburnum carlesii)

Vegetables Tolerant to Juglone

Onion
Beets
Squash and Melons
Carrot
Parsnips
Beans
Corn

Fruit Trees Tolerant to Juglone

Cherry, Nectarine, Plum, Peach (Prunus spp)
Quince (Cydonia oblongata)
Vines Tolerant to Juglone
Clematis (Clematis spp)
Virginia Creeper (Parthenocissus quinquefolia)
Wild Grape (Vitis)
Wisteria (Wisteria spp)

Herbaceous Flowers Tolerant to Juglone

Yarrow (Achillea spp)
Hosta (Hosta spp)
Bugleweed (Ajuga reptans)
Spanish Bluebell (Hyacinthoides hispanicus)
Hollyhock (Alcea rosea)
St. John’s Wort (Hypericum spp)
Anemone (Anemone spp)
Morning Glory (Ipomoea spp)
Jack-in-the-Pulpit (Arisaema triphyllum)
Iris (Iris spp)
European Wild Ginger (Asarum europaeum)
Shasta Daisy (Leucanthemum x superbum)
Aster (Aster spp)
Liriope or Lilyturf (Lirope spp)
Astilbe (Astilbe spp)
Lobelia (Lobelia spp)
Fibrous and Tuberous Begonia (Begonia)
Virginia Bluebell (Mertensia pulmonariodes)
Pot Marigold (Calendula officinalis)
Bee Balm (Monarda spp)
Bellflower (Campanula latifolia)
Grape Hyacinth (Muscari botryoides)
Glory of the Snow (Chionodoxa lucilae)
Daffodil (Narcissus spp)
Chrsyanthemum (Chrysanthemum spp)
Primrose and Sundrops (Oenothera spp)
Spring Beauty (Claytonia virginica)
Cinnamon Fern (Osmunda cinnamomea)
Crocus (Crocus spp)
Phlox (Phlox paniculata)
Dutchman’s Breeches (Dicentra cucullaria)
Mayapple (Podophyllum peltatum)
Bleeding Heart (Dicentra spp)
Jacob’s Ladder (Polemonium reptans)
Leopard’s Bane (Doronicum spp)
Solomon’s Seal (Polygonatum commutatum)
Crested Wood Fern (Dryopteris cristata)
Christmas Fern (Polystichum acrostichoides)
Purple Coneflower (Echinacea purpurea)
Primrose (Primula spp)
Epimedium (Epimedium spp)
Lungwort (Pulmonaria spp)
Winter Aconite (Eranthis hyemalis)
Bloodroot (Sanguinaria canadensis)
Dog’s Tooth Violet (Erythronium spp)
Siberian or Blue Squill (Scilla siberica)
Snowdrop (Galanthus nivalis)
Stonecrop (Sedum acre, Sedum spectabile)
Sweet Woodruff (Galium odoratum)
Lamb’s Ear (Stachys byzantia)
Gentian (Gentian spp)
Meadowrue (Thalictrum spp)
Cranesbill Geranium (Geranium sanguineum)
Spiderwort (Tradescantia virginiana)
Sunflower and Jerusalem Artichoke (Helianthus spp)
Trillium (Trillium spp)
Christmas Rose (Helleborus spp)
Globeflower (Trollius spp)
Common Daylily (Hemerocallis spp)
Tulips (Tulipa spp)
Coral Bells (Heuchera spp)
Pansy and Violet (Viola spp)
Orange Hawkweed (Hieracium auranticum)
Zinnia (Zinnia spp)


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