What Not To Plant Near A Black Walnut Tree

To avoid the problem of juglone toxicity plant as far away from your black walnut tree as possible.

You can remove any nuts or leaves that fall from the tree to limit damage to your lawn from juglone and replant the affected areas of your lawn with a juglone resistant species of grass such as tall fescue. As an added precaution make sure the soil in the raised bed is well drained. So on a side note since there s so little hydrojuglone in the wood using walnut leaves and wood chips as mulch shouldn t be a problem. Carrots onions beets and parsnips have been observed growing near black walnut trees.

Black walnut tree toxicity black walnut trees load their roots buds and nut hulls with the juglone toxin leaves and stems have smaller amounts of juglone. The juglone that makes a black walnut tree and the soil where one has grown so toxic to most other plants will still be present in compost. As the mature roots die back they will leave juglone in the soil. Although these plants are not sensitive to juglone they require full sun at least six hours a day and moist.

The toxic black walnut substance juglone black walnuts that have been husked. Don t use any materials from the black walnut tree in compost or you risk poisoning the soil where you spread the compost instead of enriching it. Juglone has been documented as inhibiting stunting or damaging nearby plants for centuries. These plants can grow near or within the canopy of a black walnut tree.

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You may be interested to read the 201 different species of plants that are juglone tolerant and can grow near black walnut trees. But wait you say i don t have a black walnut tree. These plants should also be avoided if there has been a black walnut planted in the area in the recent past. Plants sensitive to black walnut toxicity annuals and vegetables.

Juglone sensitive plants to avoid in zone 3 don t plant these plants within 50 feet of a mature black walnut tree or within the drip line of an immature black walnut tree. Asparagus cabbage eggplant flowering tobacco pepper petunia potato tomato herbaceous perennials. Autumn crocus baptisia columbine lily asian hybrids peony rhubarb. Don t compost any part of the black walnut tree.

Also be careful that nuts and debris from the black walnut tree don t accumulate on the raised bed. The roots and husks have the highest concentration leaves much less and the wood has very little. As with any evolutionary process some plants have been documented to be tolerant of juglone. 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.

Black walnut trees produce a toxic chemical known as juglone that can stunt the growth of your grass.