knotweeds
Seven knotweeds, apart from numerous related garden ornamentals, are present in Britain. The knotweeds are all perennial herbs with more or less cane-like stems, dying back to ground level in autumn and overwintering as rhizomes.
- bohemica (Fallopia ×bohemica, Bohemian knotweed),
- conollyana (Fallopia ×conollyana, railway-yard knotweed),
- dwarf Japanese knotweed (Fallopia japonica var. compacta),
- giant knotweed (Fallopia sachalinensis),
- Himalayan knotweed (Persicaria wallichii),
- Japanese knotweed (eradication),
- Japanese knotweed (Fallopia japonica var. japonica),
- lesser knotweed (Persicaria campanulata),
- rhizome
This definition is abridged from A – Z of tree terms: A companion to British arboriculture.
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