Canada's Plant Hardiness Site

Data Entry

Choose a species from the list below.

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family: Polygonaceae

Polygonum achoreum striate knotweed,wandering knotweed,beakseeded knotweed,Blake's knotweed,leathery knotweed
Polygonum articulatum coastal jointweed,northern jointweed
Polygonum austiniae Mrs. Austin's knotweed
Polygonum aviculare prostrate knotweed,common knotweed,doorweed
Polygonum aviculare subsp. aviculare common knotweed,doorweed,prostrate knotweed
Polygonum aviculare subsp. boreale northern knotweed
Polygonum aviculare subsp. buxiforme shore knotweed,American knotweed
Polygonum aviculare subsp. depressum ovalleaf knotweed,small-leaf knotgrass
Polygonum aviculare subsp. neglectum narrowleaf knotweed
Polygonum aviculare subsp. rurivagum narrowleaf knotweed
Polygonum douglasii Douglas's knotweed
Polygonum engelmannii Engelmann's knotweed
Polygonum erectum erect knotweed
Polygonum fowleri Fowler's knotweed
Polygonum fowleri subsp. fowleri Fowler's knotweed
Polygonum fowleri subsp. hudsonianum Hudsonian knotweed
Polygonum glaucum
Polygonum humifusum Alaska knotweed
Polygonum humifusum subsp. caurianum Alaska knotweed
Polygonum majus palouse knotweed,large knotweed,wiry knotweed
Polygonum minimum broadleaf knotweed,zigzag knotweed,dwarf knotweed,leafy dwarf knotweed
Polygonum nuttallii Nuttall's knotweed
Polygonum oxyspermum sharpfruit knotweed
Polygonum oxyspermum subsp. oxyspermum sharpfruit knotweed
Polygonum oxyspermum subsp. raii Ray's knotweed
Polygonum paronychia black knotweed,dune knotweed,beach knotweed
Polygonum patulum Bellard's smartweed
Polygonum polygaloides milkwort knotweed,closeflower knotweed,polygala knotweed,whitemargin knotweed
Polygonum polygaloides subsp. confertiflorum closeflower knotweed,denseflower knotweed
Polygonum polygaloides subsp. kelloggii Kellogg's knotweed
Polygonum polygaloides subsp. polygaloides polygala knotweed,whitemargin knotweed,milkwort knotweed,closeflower knotweed
Polygonum ramosissimum yellowflower knotweed,bushy knotweed
Polygonum ramosissimum subsp. prolificum bushy knotweed
Polygonum ramosissimum subsp. ramosissimum yellowflower knotweed,bushy knotweed
Polygonum sawatchense Sawatch knotweed
Polygonum sawatchense subsp. oblivium Sawatch knotweed
Polygonum sawatchense subsp. sawatchense Sawatch knotweed
Polygonum spergulariiforme scatter knotweed,fall knotweed,spurry knotweed

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