201 Plants Compatible With Black Walnut Tree, Juglone

Black Walnut trees emit a toxic substance called Juglone that kills certain plants that grow near them [1]. However, not all plants are susceptible to Black Walnut Toxicity via Juglone poisoning. Knowing which plants can thrive along side Black Walnut trees is important to have a successful garden or flower bed.

By thoroughly researching University and Science Journal publications, I’ve compiled a comprehensive list of Plants tolerant of Black Walnut Trees. There are over 200 species of vegetables, flowers, and trees that are not harmed by Juglone, the poison that is emitted from Black Walnut tree roots.

The toxic Black Walnut substance, Juglone

black walnuts husk removed — Black Walnuts that have been husked.

Juglone has been documented as inhibiting, stunting, or damaging nearby plants for centuries. In fact the first record was nearly 2000 years ago, when Pliny the Elder noted that “The shadow of walnut trees is poison to all plants within its compass [3]“. In addition to harming transplants, Black Walnut Trees can prevent or inhibit the germination or harm seedlings of various species [2].

I’ve compiled a complete listing of all known plants that are sensitive to the Black Walnut Toxin Juglone based on researching universities, government and other journal publications. This list contains all documented vegetables, flowers, trees and shrubs that are impervious to Black Walnut toxin known as Juglone.

Jump to the different Sections Here:

Vegetables
Flowers
Trees and Shrubs

Comprehensive List of Plants Tolerant of Black Walnut Trees

Vegetables that can grow near Black Walnut:

Number	Common name	Species Name	Type
1	Beans	Phaseolus vulgaris	Vegetable
2	Beets	Beta spp	Vegetable
3	Carrot	Daucus carota	Vegetable
4	Com	Zea mays	Vegetable
5	Melons	Cucumis spp	Vegetable
6	Onion	Allium spp	Vegetable
7	Parsnips	Pastinaca sativa	Vegetable
8	Squash	Cucurbita spp	Vegetable

References – [2] [5], [7], [8], [9], [10], [11] BACK TO TOP

119 Flowers and Vines that can grow near Black Walnut:

Number	Common name	Species Name	Type
1	Actinida, bower	Actinidia arguta	Vine
2	Ajuga	Ajugia pyramidalis	Flower
3	Alumroot	Heuchera sp.	Flower
4	Anemone	Anemone spp	Flower
5	Aster	Symphyotrichum spp	Flower
6	Astilbe	Astilbe spp	Flower
7	Bee Balm	Monarda spp	Flower
8	Begonia	Begonia spp	Flower
9	Bellflower	Campanula latifolia	Flower
10	Bellwort	Uvalaria sp.	Flower
11	Big Bluestem	Andropogon gerardi	Grass
12	Big-leaved Aster	Eurybia macrophylla	Flower
13	Bittersweet	Celastrus scandens	Vine
14	Black Eyed Susan	Rudbeckia hirta	Flower
15	Black Raspberry	Rubus occidentalis	Shrub
16	Bleeding Heart	Lamprocapnos spectabilis	Flower
17	Bloodroot	Sanguinaria canadensis	Flower
18	Blue Grama	Bouteloua gracilis	Grass
19	Bluegrass, Kentucky	Poa pratensis	Grass
20	Bugleweed	Ajuga reptans	Flower
21	Calendula	Calendula officinalis	Flower
22	Cardinal Flower	Lobelia cardinalis	Flower
23	Chickweed	Stellaria media	Flower
24	Christmas Rose	Helleborus spp	Flower
25	Clematis	Clematis occidentalis	Flower
26	Coral bells	Heuchera	Flower
27	Cranesbill	Geranium spp	Flower
28	Creeping Charlie (ground ivy)	Glechoma hederacea	Vine
29	Crocus	Crocus spp	Flower
30	Currants	Ribes spp	Vine
31	Cyclamen	Cyclamen persicum	Flower
32	Daffodil	Narcissus Spp	Flower
33	Dandelion	Taraxacum officinale	Flower
34	Daylily	Hemerocallis	Flower
35	Dog’s Tooth Violet	Erythronium spp	Flower
36	Dutchman’s Breeches	Dicentra cucullaria	Flower
37	Epimedium	Epimedium spp	Flower
38	Evening Primrose	Oenothera	Flower
39	False Solomon’s Seal	Maianthemum racemosum	Flower
40	Fern, Christmas	Polystichum sp.	Flower
41	Fern, lady	Bulbinopsis bulbosa	Flower
42	Ferns	Tracheophyta spp	Flower
43	Fescue	Festuca sp.	Grass
44	Garden Phlox	Phlox paniculata	Flower
45	Gentian	Gentiana spp	Flower
46	Globeflower	Trollius spp	Flower
47	Glory of the Snow	Chionodoxa lucilae	Flower
48	Grape Hyacinth	Muscari spp	Flower
49	Grass, orchard	Dactylis glomerata	Grass
50	Grass, redtop…	Agrostis gigantea	Grass
51	Hollyhock	Alcea	Flower
52	Hosta	Hosta sp.	Flower
53	Hydrangea, wild	Hydrangea sp.	Flower
54	Iris	Iris germanica	Flower
55	Ironweed	Verononia	Flower
56	Jack in the Pulpit	Arisaema triphyllum	Flower
57	Jacob’s Ladder	Polemonium caeruleum	Flower
58	Joe Pye Weed	Eurohicum	Flower
59	Lamb’s Ear	Stachys byzantina	Flower
60	Leopard’s Bane	Doronicum orientale	Flower
61	Liriope	Liriope sp.	Flower
62	Little Bluestem	Schizachyrium scoparium	Grass
63	Lobelia	Lobelia spp	Flower
64	Lungwort	Pulmonaria spp	Flower
65	Marigold	Tagetes	Flower
66	May Apple	Podophyllum	Flower
67	Meadowrue	Thalictrum spp	Flower
68	Morning Glory	Ipomoea	Flower
69	Nightshade	Solanym aviculare	Vine
70	Orange Hawkweed	Hieracium auranticum	Flower
71	Ostrich Fern	Maltcuria struthiopteris	Flower
72	Pachysandra	Pachysandra sp.	Flower
73	Pansy	Viola tricolor	Flower
74	Parsnip	Pastinaca sativa	Flower
75	Periwinkle (myrtle)	Vinca minor	Flower
76	Phlox(s)	Phlox spp	Flower
77	Poison Ivy	Rhus radicans	Vine
78	Primrose	Primula vulgaris	Flower
79	Purple Coneflower	Echinacea spp	Flower
80	Pussytoes	Antennaria	Flower
81	Sedges	Carex spp	Grass
82	Shasta Daisy	Leucanthemum superbum	Flower
83	Side-oats grama	Bouteloua curtipendula	Grass
84	Snowdrop	Galanthus	Flower
85	Solomon’s Seal	Polygonatum	Flower
86	Speedwell, creeping	Veronica filiformis	Flower
87	Spiderwort	Tradescantia	Flower
88	Spring Beauty	Claytonia virginica	Flower
89	St. John’s wort	Hypericum Pyramidatum	Flower
90	Stonecrop	Sedum spp	Flower
91	Sundrops	Oenothera fruticosa	Flower
92	Sunflower	Helianthus spp	Flower
93	Sweet Woodruff	Galium odoratum	Flower
94	Thimbleweed	Anemone virginiana	Flower
95	Timothy	Phleum pratense	Grass
96	Toothwort	Lathraea squamaria	Flower
97	Trillium	Trillium spp	Flower
98	Tulips	Tulipa	Flower
99	Violets	Viola spp	Flower
100	Virginia Bluebells	Mertensia virginica	Flower
101	Virginia Creeper	Parthenocissus quinquefolia	Vine
102	Wheat	Triticum sp.	Grass
103	White Clover	Trifolium repens	Flower
104	Wild Bergamot	Monarda Fistulosa	Flower
105	Wild Geranium	Geranium maculatum	Flower
106	Wild Ginger	Asarum	Flower
107	Wild Grape (Vitis)	Vitis vinifera	Vine
108	Wild Hyacinth	Camassia spp	Flower
109	Wild Leek	Allium trioccum	Flower
110	Wild Roses	Rosa spp	Flower
111	Winter Aconite	Eranthis hyemalis	Flower
112	Wood Sorel, creeping	Oxalis corniculata	Flower
113	Yarrow	Achillea millefolium	Flower
114	Zig-zag Goldenrod	Solidago Flexicaulis	Flower
115	Zinnia	Zinnia spp	Flower
116	Orange Jewelweed	Impatiens Capensis	Flower
117	Yellow Jewelweed	Impatiens Pallida	Flower
118	Blue Lobelia	Lobelia sp	Flower
119	Pale Purple Coneflower	Echinacea pallida	Flower

References – [7], [8], [9], [10], [11] BACK TO TOP

List of 74 Trees and Shrubs that can grow near Black Walnut

Number	Common name	Species Name	Type
1	American Holly	Ilex spp	Shrub
2	Apricots	Prunus spp	Shrub
3	Arborvitae**	Thuja occidentalis	Shrub
4	Barberry	Berberis spp	Shrub
5	Black Elderberry	Sambucus nigra	Shrub
6	Blackhawk Viburnum	Viburnum prunifolium	Shrub
7	Cherry	Prunus spp	Shrub
8	Current	Ribes spp	Shrub
9	Daphne	Daphne spp	Shrub
10	Dogwood	Cornus alternifolia	Shrub
11	Flowering Dogwood	Cornus florida	Shrub
12	Forsythia	Forsythia vahl	Shrub
13	Hawthorne	Crataegus	Shrub
14	Hazelnut	Corylus americana	Shrub
15	Hibiscus	Hibiscus spp	Shrub
16	Juniper	Juniperus spp	Shrub
17	Lilac	Syringa spp	Shrub
18	Maple-leaved Viburnum	Viburnum acerifolia	Shrub
19	Mockorange	Philadelphus spp	Shrub
20	Ninebark	Physocarpus opulifolius	Shrub
21	Ohio Buckeye	Aesculus glabra	Shrub
22	Pears	Pyrus spp	Shrub
23	Persimmon	Diospyros virginiana	Shrub
24	Pinxterbloom Azalea	Rhododendron periclymenoides	Shrub
25	Plum	Prunus spp	Shrub
26	Quince	Cydonia oblongata	Shrub
27	Red Elderberry	Sambucus racemosa	Shrub
28	Rose	Rosa spp	Shrub
29	Rose of Sharon	Hibiscus syriacus	Shrub
30	Sassafrass	Sassafras albidum	Shrub
31	Service Berry	Amelanchier spp	Shrub
32	Smooth Sumac	Rhus glabra	Shrub
33	Spicebush	Lindera benzoin	Shrub
34	Staghorn Sumac	Rhus typhina	Shrub
35	Sumac	Rhus spp	Shrub
36	Sumac, Winged Sumac	Rhus copallina	Shrub
37	Witch Hazel	Hamamelis virginiana	Shrub
38	American Beech	Fagus grandifolia	Tree
39	American Elm	Ulmus americana	Tree
40	American Hazelnut	Corylus americana	Tree
41	Bitternut Hickory	Carya cordiformis	Tree
42	Black Birch	Betula lenta	Tree
43	Black Cherry	Prunus serotina	Tree
44	Black Gum / Tupelo	Nyssa sylvatica	Tree
45	Black Locust	Robinia pseudoacacia	Tree
46	Boxelder	Acer negundo	Tree
47	Canadian Hemlock	Tsuga canadensis	Tree
48	Carolina Silverbell	Halesia carolina	Tree
49	Catalpa	Catalpa bignonioides	Tree
50	Dogwood	Cornus spp	Tree
51	Eastern Redbud Tree	Cercis canadensis	Tree
52	Fringe tree	Chionanthus wirginicus	Tree
53	Golden rain tree	Koelreuteria paniculata	Tree
54	Hawthorn	Crataegus	Tree
55	Honey Locust	Gleditsia triacanthos	Tree
56	Maple, Black Maple	Acer nigrum	Tree
57	Maple, Red Maple	Acer rubrum	Tree
58	Maple, Sugar Maple	Acer saccharum	Tree
59	Nectarine	Prunus persica nucipersica	Tree
60	Oak	Quercus spp	Tree
61	Pagoda Dogwood	Cornus alternifolia	Tree
62	Pawpaw	Asimina triloba	Tree
63	Peach	Prunus persica	Tree
64	Pignut Hickory	Carya glabra	Tree
65	Plum	Prunus spp	Tree
66	Red Cedar	Juniperus virginiana	Tree
67	Red Oak	Quercus rubra	Tree
68	Shagbark Hickory	Carya Ovata	Tree
69	Sweetgum	Liquidambear styracifua	Tree
70	Sycamore	Platanus occidentalis	Tree
71	Tulip Tree / Poplar	Liriodendron tulipifera	Tree
72	Virginia Pine	Pinus virginiana	Tree
73	White Ash	Fraxinus americana	Tree
74	White Oak	Quercus alba	Tree

References – [7], [8], [9], [10], [11]. BACK TO TOP

What plants die from growing near Black Walnut Trees?

There are over 40 different species that die from growing near Black Walnut Trees. These plants are all sensitive to Juglone, and should not be planted near a Black Walnut Tree. You can read the full listing of plants sensitive to Juglone here.

Learn More About Black Walnut Trees

References:

[1] – J. Chem. Educ. 1973, 50, 11, 782. Publication Date:November 1, 1973. https://doi.org/10.1021/ed050p782

[2] – I. Kocacë Aliskan & I. Terzi (2001) Allelopathic effects of walnut leaf extracts and juglone on seed germination and seedling growth, The Journal of Horticultural Science and Biotechnology, 76:4, 436-440, DOI: 10.1080/14620316.2001.11511390

[3] – Pliny the Elder, AD23-79. https://extension.illinois.edu/blogs/garden-scoop/2018-08-23-black-walnut

[4] – KUO-CHUAN LEE. NATURE AND OCCURRENCE OF JUGLONE IN JUGLANS NIGRA L. MS Thesis, Department of Horticulture. Kansas State University. 1967

[5] – I. Terzi. Allelopathic effects of Juglone and decomposed walnut leaf juice on muskmelon and cucumber seed germination and seedling growth. 2008. African Journal of Biotechnology. Department of Biology, Faculty of Education, Dumlupınar University, Kütahya, Turkey

[6] – Michaela Achatz. Matthias C.Rillig. Arbuscular mycorrhizal fungal hyphae enhance transport of the allelochemical juglone in the field. Soil Biology and Biochemistry. Volume 78, November 2014, Pages 76-82

[7] – Walnut Toxicity. MINISTRY OF AGRICULTURE, FOOD AND RURAL AFFAIRS, Ontario Canada. Retrieved 29OCT2020. http://www.omafra.gov.on.ca/english/crops/facts/info_walnut_toxicity.htm

[8] – Plants tolerant of black walnut toxicity. Morton Arboretum. Retrieved 29OCT2020. https://www.mortonarb.org/trees-plants/tree-and-plant-advice/horticulture-care/plants-tolerant-black-walnut-toxicity

[9] – Toxic Plant Profile. University of Maryland. Retrieved 29OCT2020. https://extension.umd.edu/learn/toxic-plant-profile-black-walnut

[10] – Black Walnut: The Killer Tree. Iowa State University Extension. Retrieved 29OCT2020. https://www.extension.iastate.edu/news/2005/jul/070701.htm

[11] – Brown, Diane. Growing vegetable gardens near black walnut trees. Michigan State University Extension. Retrieved 29OCT2020. https://www.canr.msu.edu/news/growing_vegetable_gardens_near_black_walnut_trees