BlackWalnut Tree CompatiblePlants: Plants That Grow Under BlackWalnut Trees. By Gardening Know How.There are several ways to prevent toxicity. One way (probably the easiest way) is, when planting around a blackwalnut tree, plant only blackwalnut tree compatibleplants. planting flowers. blackwalnut tree. flower garden.planting flowers. When autocomplete results are available use up and down arrows to review and enter to select. Knowing which plants can thrive along side BlackWalnut trees is important to have a successful garden or flower bed. By thoroughly researching University and Science Journal publications, I’ve compiled a comprehensive list of Plants tolerant of BlackWalnut Trees. "Choosing companion plants for walnuts is tricky because this genus is allelopathic–that is, the plants secrete a toxic substance that suppresses competing plants," notes garden author Toby Hemenway. Several species remain impervious to this substance, called juglone. Do blackwalnut trees kill grass? What can you not plant near a blackwalnut tree? Avoid planting vegetables that are sensitive to juglone, such as asparagus, cabbage, eggplant, peas, peppers, potatoes, rhubarb and tomatoes. The roots of blackwalnut (Juglans nigra) produce the chemical juglone, which suppresses the growth of other plants. It even kills some species that are very sensitive to this chemical. Juglone can also leach into the soil from decaying leaves, bark, roots and fruit. Various Tree Topics. CompatiblePlantings for Walnut Toxicity.So many people want to know what is tolerant of blackwalnut toxins. This listing focuses on native trees, shrubs, vines and flowers that would grow here in the Ontario area. Indigenous communities in Northern California have long valued BlackWalnuts for both food and craft. Ethnobotanical records indicate that the Kashaya Pomo ate the nuts both fresh and dried and used the husks to produce dark dyes for basketry and other materials. Safe Plants For Planting Near BlackWalnut Trees. While there are several plants that should be avoided near blackwalnut trees, there are also compatible options that can thrive in their presence. Blackwalnuts release a chemical known as juglone, a natural toxin that is harmful to other plants. Keep this in mind when planning your garden or planting fruit trees such as apples. #naturefacts #homestead #treetok #rusticliving #farmlife. · But the good news is that some plants grow very happily near black walnut trees, seemingly immune to the toxic effects of juglone. To help you plan what to grow in and around these wonderful trees, we’ve found 15 of the very best companion plants for black walnuts. Every part of a blackwalnut tree contains a chemical called juglone, which is what makes the growth of other plants so difficult near a blackwalnut tree. The chemical juglone is at its highest concentrations in the blackwalnut roots, tree buds, and in the shells of the blackwalnuts themselves. Juglone is toxic to a number of other plant species...See full list on gardeningchannel.comAnemone(Anemonastrum) Aster False Goat’s Beard (Astilbe) Bee Balm(Monarda) Begonia Birthroots (Trillium) Black-Eyed Susan(Rudbeckia hirta) Bleeding Heart (Lamprocapnos spectabilis) Bugleherb (Ajuga reptans) Common Bluebell (Hyacinthoides non-scripta) Common Cinquefoil (Potentilla canadensis) Common Evening Primrose (Oenothera biennis) Common Fleaba...See full list on gardeningchannel.comBlue Fescue Grass (Festuca glauca) Cat Grass/Cock’s Foot/Orchard Grass (Dactylis glomerata) Common Sage(Salvia officinalis) Coral Bells (Heuchera) Ferns Greenbrier (Smilax spp.) Hostas—Certain varieties only Jack-in-the-pulpit (Arisaema triphyllum) Kentucky Bluegrass(Poa pratensis) Lamb’s Ear/Wooly Hedgenettle (Stachys byzantina) Mayapple (Podophyl...See full list on gardeningchannel.comBeans, including Lima Beans, Snap Beans, and Soybeans Beets(Beta) Black Raspberry(Rubus occidentalis) Carrots(Daucus carota subsp. sativus) Cauliflower(Brassica oleracea var. botrytis) Cherries(Prunus avium) Common Grape Vine/Wild Grape (Vitis vinifera) Corn(Zea mays subsp. mays L.) Garlic(Allium sativum) Jerusalem Artichoke(Helianthus tuberosus) L...See full list on gardeningchannel.comAmerican Beech (Fagus grandifolia) American Elm Tree (Ulmus americana) Arborvitae Tree (Thuja) Black Gum Tree/Sour Gum Tree/Tupelo (Nyssa sylvatica) Black Locust Tree (Robinia pseudoacacia) Blackhaw Viburnum(Viburnum prunifolium) Canadian Hemlock Tree/Eastern Hemlock Tree (Tsuga canadensis) Cigar Tree (Catalpa) Corkscrew Willow Tree(Salix Matsudana...See full list on gardeningchannel.comDon’t compost any part of the black walnut tree. 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. 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 the organic matter tha...See full list on gardeningchannel.comNov 6, 2025 · Thankfully, many species are tolerant of juglone and thrive near black walnuts. Try planting: Carrots, corn, beans, squash, beets, onions, melons, and parsnips. Elderberries, persimmon, catalpa, oak, maple, and red cedar — all make excellent black walnut companion plants. · Finding plants that thrive under black walnut trees can feel like solving a garden mystery. These trees release juglone, a chemical that stifles many plants, … · There are actually several plants that thrive in the unique conditions around black walnuts, and you can still have a vibrant, full garden in these spots. If you’re looking to make the most of those tricky shaded areas, these 18 plants are perfect for growing under black walnut trees. · Thankfully, many species are tolerant of juglone and thrive near black walnuts. Try planting: Carrots, corn, beans, squash, beets, onions, melons, and parsnips. Elderberries, persimmon, catalpa, oak, maple, and red cedar — all make excellent black walnut companion plants. · Finding plants that thrive under black walnut trees can feel like solving a garden mystery. These trees release juglone, a chemical that stifles many plants, … · There are actually several plants that thrive in the unique conditions around black walnuts, and you can still have a vibrant, full garden in these spots. If you’re looking to make the most of those tricky shaded areas, these 18 plants are perfect for growing under black walnut trees. The basic idea behind companion planting is both simple and sensible: many plants grow better near some companions than they do near others or when alone. Well, plantingcompatibleplants nearby can improve growth, deter pests, and even enhance flavor.There are different varieties, but the standard Borage officinalis is quite popular. Plants to Avoid. Now, here’s something crucial – avoid plantingBlackWalnut nearby. The official Old Farmer’s Almanac’s evidence-based companion planting chart. Discover which vegetables grow best together to boost harvests and repel pests naturally.
