Vegetables affected by Black Walnut Toxicity
- Cabbage, Brassica oleracea capitata
- Peppers, Capsicum species (some)
- Tomatoes, Lycopersicon esculentum
- Flowering Tobacco, Nicotiana alata
- Petunia species and cultivars
- Eggplant, Solanum melongena
- Potato, Solanum tuberosum
- double-flowered cole vegetables
- Trees affected Apple, Lilac, azalea, mountain laurel, rhododendron, red pine
- blackberry, blueberry
Walnut leaves can be composted because the toxin breaks down when exposed to air, water and bacteria. The toxic effect can be degraded in two to four weeks. In soil, breakdown may take up to two months.
So by this list I will have to plant these near the back of my yard. Where I started planting the tomatoes.