It ’s not the want of a green thumb kill plants near that black walnut tree tree . " choose companion plant for walnuts is tricky because this genus is allelopathic – that is , the industrial plant release a toxic kernel that curb competing plants , " notes garden author Toby Hemenway . Several species stay on impervious to this meaning , called juglone . consider the shadiness cast by the pitch-dark walnut Sir Herbert Beerbohm Tree and set Dominicus - loving , juglone - resistant plants well away from its canopy and shade- and juglone - tolerant botancials among the tree roots .

Fruit Plants

In the wild , shade - tolerant currant often grow under the canopy of walnut trees , according to Hemenway . Other juglone - resistant berry plant include elderberries and mulberries , bring home the bacon they ’re set at enough of a distance to get several hours of Lord’s Day . Purdue University Extension also suggest black raspberries , cherries , crab apple ( considered eatable because the fruits make splendiferous gelatin ) , persimmons and papaw tree trees .

Trees

Walnut - friendly evergreens suggest by Purdue ’s extension let in juniper smorgasbord , reddish cedar , hemlock and arborvitae . Deciduous tree that grow unfazed by walnut include elm , hawthorn , hickory , plane tree , black locust , maple and oak .

Landscape Shrubs and Vines

Among the vine and bush Purdue recommends for imbed near walnut tree are daphne , rose of sharon , wild uprise , euonymous , forsythia , morning nimbus , viburnum , clematis , honeysuckle and fall olive .

Groundcovers

Choices to plow the primer coat instantly under a walnut tree Sir Herbert Beerbohm Tree or on the cheery side of the canopy include wild ginger , violets , Solomon ’s seal , sweet woodruff , Virginia creeper and pachysandra . For those who opt lawn , Kentucky bluegrass growing is n’t inhibit by juglone . Taller groundcover options include genus Funka , ferns , scented Cicely and lamb ’s ears .

Vegetables

Although Purdue list members of the Solanaceae ( eggplant , tomato and pepper ) family as too sensitive to juglone to implant near walnut tree trees , Hemenway says the experiment is worth trying . His reasoning is that in the wild , undomesticated penis of the Solanaceae family , include wolfberry and a chile pepper congener called chiltepine , seem to thrive near calamitous walnut tree trees . Purdue urge some vegetables as compatible with walnut . This list include lima and photograph beans , beets , squash , parsnip , carrot , Indian corn and melons . It also hint the sunflower relative Jerusalem artichoke , a twofold - duty plant that make cheerful yellow flowers above earth and edible tubers below ground . The industrial plant are repeated , ply you leave a few tubers behind after fall harvest .

Herbs and Flowers

For color and ( in some cases ) aroma , try any of the following near black walnut tree trees : marigolds , zinnias , bee balm , coral bell , cranesbill , lungwort , pansy , phlox , althaea , trilliums and tulips .

References

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