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× Reyllopia

×Reyllopia conollyana

Reyllopia conollyana, also called Haringey knotweed, is a hybrid of Japanese knotweed and Russian vine, known from a single wild population in London. It is a vigorous climbing and scrambling perennial, rarely grown on purpose.

Family
Polygonaceae (Buckwheat family)
Grows as
Climber
Light
Full sun, Part shade
Water
Water regularly while establishing, then as needed when the top of the soil dries out.
Soil
Any reasonably fertile, well-drained garden soil.
Temperature
Hardy to around -15 °C; tolerates the cold of a British winter.
How easy
Easy

About

× Reyllopia is a hybrid genus with a single known species, × Reyllopia conollyana (synonym Fallopia × conollyana), the Haringey knotweed or railway-yard knotweed. The species is a hybrid between Japanese knotweed (Reynoutria japonica) and the Russian vine (Fallopia baldschuanica). The only known wild British population was discovered ("new to science") by David Bevan at Railway Fields in 1987.

It was named in honour of Ann Conolly in 2001 for her 84th birthday. At the time, both parents were considered to be in the genus Fallopia.

Text excerpted from the Wikipedia article × Reyllopia by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

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