|Posted by jeff on January 6, 2017 at 1:20 PM|
Black Walnut Tree Toxicity
The Black Walnut (juglans nigra) is a vigorous hardy tree. Unfortunately, the black walnut’s roots, which may extend 50 feet or more from the trunk, do exude a natural herbicide known as juglone that prevents many plants from growing within their reach.
Tomatoes, potatoes, apples, pears, berries, and some landscape plants such as rhododendrons, azaleas, and lilacs may be killed or stunted if grown in close proximity to black walnut roots
Plants to avoid planting under the canopy of a Black Walnut:
vegetables: asparagus,cabbage,eggplant, pepper, potato, rhubarb, tomato
fruits; apple, blackberry, blueberry, pear
Landscape plants: azaleam hydrangea, larch, lilac, magnolia, mountain laurel, mugo pine, potentilla, privet, rhododendron, viburnum, yew
flowers & perennials: baptista, chrysanthemum, lily, peony, petunia.
For a more detailed list of what can or cannot be planted visit our complete black walnut page here