The King of Ponds              The Salmon Family Garden Center since 1968
Arbordale Nurseries & Landscaping

Arbordale Nurseries & Landscaping

The King of Ponds                         The Salmon Familu Since 1968

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Black Walnut Tree - what not to plant underneath

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

Categories: Landscaping, Garden Center