Harm from Ivy Roots - Knowledgebase Question

Commugny, Sw
Avatar for teleki
Question by teleki
March 3, 1998
Are ivy roots used only for support, or for feeding also, in which case, I suppose they would harm the beautiful walnut tree the ivy is climbing on? Thank you!

Answer from NGA
March 3, 1998
English ivy (Hedera helix) climbs by means of small rootlets that grow along their stem. According to The New York Botanical Garden Illustrated Encyclopedia of Horticulture: "Contrary to opinions sometimes expressed, ivy clothing the trunks and bare branches of trees does no appreciable harm. Only if it invades the leafy portion of the crown and so inteferes with light and air circulation does serious damage result."

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