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Advice on What to Plant Near Black Walnut Trees

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Here at Gertens, we have some professional advice on what to plant near Black Walnut trees. Did you know that Black Walnut, Junglans nigra, and its close relative, the Butternut, Junglans cinerea, produce juglone which is toxic to many plants? Keep sensitive plants at least 20 feet away from these trees. Many plant species will not die immediately but slowly over a period of years. Other species, particularly those in the Nightshade Solanacea family, are extremely sensitive to juglone and will decline fairly quickly. Removing the offending tree will not solve the problem, since juglone is contained in all parts of the root system, and unless every piece of root is removed plants in contact with the roots will continue to suffer the toxic side effects for many years.

coral bell
Creole Nights Coral Bell

Perennials Resistant to Juglone
Adiantum pedantum (Maidenhair Fern)
Alchemilla (Lady’s Mantle)
Anemonella thalictroides also known as Thalictrum thalictroides (Rue Anemone)
Aquilegia (Columbine)
Asarum canadense (Wild Ginger)
Asarum europaeum (European Ginger)
Astilbe (Astilbe)
Athyrium niponicum (Japanese Painted Fern)
Bergenia (Pigsqueak)
Brunnera (False Forget-Me-Not or Siberian Bugloss)
Epimedium (Barrenwort or Fairy Wings)
Euonymous fortune (Winter Creeper)
Filipendula rubra (Queen of the Prairie)
Heuchera (Coralbells)
Hosta (Hosta)
Ligularia (Groundsel or Ragwort)
Matteuccia struthiopteris (Ostrich Fern)
Polygonatum odoratum (Solomon Seal)
Primula sieboldii (Primrose)
Pulmonaria (Lungwort)
Tiarella (Foam Flower)
Tricyrtis hirta (Toadlily)

hedge cotoneaster
Hedge Cotoneaster

Other Plants Resistant To Juglone

Crataegus (Hawthorn)
Malus (Crabapple)
Poa (Kentucky Bluegrass)
Prunus (Cherry)
Robinia (Locust)
Rubus (Black Raspberry)
Trifolium (Clover)
Ulmus (Elm)
Vitis (Wild Grape)

Plants Susceptible To Juglone

Vegetable Plants including: Beans, Cucumbers, Eggplant, Green Pepper, Potato and Tomato
Betula (Birch)
Celtis (Hackberry)
Cotoneaster (Cotoneaster)
Medicago (Alfalfa)
Tilia (Linden, Basswood)
Vitis (Domestic Grapes)