Polygonum Plants — Species, Care & Identification
Polygonum is a plant genus in the Polygonaceae family. PlantoScan has care guides for 52 species in this genus, listed over 2 pages. Each guide covers watering, light, soil, hardiness zone and pet toxicity, with sources.
Polygonum species
Silver-sheathed Knotweed
Polygonum argyrocoleon
Sula VanderplankCC BY 4.0iNaturalistresized
Water knotweed
Polygonum bellardii
Oleksandr ShynderCC BY 4.0iNaturalistresized
Douglas' Knotweed
Polygonum douglasii
Eric SchmidtCC BY 4.0iNaturalistresized
Mexican Smartweed
Polygonum mexicanum
Erick Vélez SánchezCC BY 4.0iNaturalistresized
California Smartweed
Polygonum polygaloides
Abby HydeCC BY 4.0iNaturalistresized
- Prostrate KnotweedPolygonum achoreumPlantoScan
Prostrate Knotweed
Polygonum achoreum
- Himalayan KnotweedPolygonum affinePlantoScan
Himalayan Knotweed
Polygonum affine
- Polygonum albanicumPolygonum albanicumPlantoScan
Polygonum albanicum
- American KnotweedPolygonum americanumPlantoScan
American Knotweed
Polygonum americanum
- KnotweedPolygonum amgensePlantoScan
Knotweed
Polygonum amgense
- Shore knotweedPolygonum arenariumPlantoScan
Shore knotweed
Polygonum arenarium
- CrabgrassPolygonum arenastrumPlantoScan
Crabgrass
Polygonum arenastrum
- Prostrate KnotweedPolygonum avicularePlantoScan
Prostrate Knotweed
Polygonum aviculare
- Polygonum bidwelliaePolygonum bidwelliaePlantoScan
Polygonum bidwelliae
- Bolander's KnotweedPolygonum bolanderiPlantoScan
Bolander's Knotweed
Polygonum bolanderi
- Polygonum borealePolygonum borealePlantoScan
Polygonum boreale
- California PolygonumPolygonum californicumPlantoScan
California Polygonum
Polygonum californicum
- Polygonum cascadensePolygonum cascadensePlantoScan
Polygonum cascadense
- Mediterranean KnotweedPolygonum cognatumPlantoScan
Mediterranean Knotweed
Polygonum cognatum
- Creeping KnotweedPolygonum corrigioloidesPlantoScan
Creeping Knotweed
Polygonum corrigioloides
- Erect KnotweedPolygonum erectumPlantoScan
Erect Knotweed
Polygonum erectum
- Fowler's KnotweedPolygonum fowleriPlantoScan
Fowler's Knotweed
Polygonum fowleri
- Field knotweedPolygonum glaucumPlantoScan
Field knotweed
Polygonum glaucum
- Polygonum heterosepalumPolygonum heterosepalumPlantoScan
Polygonum heterosepalum
- Polygonum hickmaniiPolygonum hickmaniiPlantoScan
Polygonum hickmanii
- Creeping KnotweedPolygonum humifusumPlantoScan
Creeping Knotweed
Polygonum humifusum
- Japanese KnotweedPolygonum japonicumPlantoScan
Japanese Knotweed
Polygonum japonicum
- Polygonum macrophyllumPolygonum macrophyllumPlantoScan
Polygonum macrophyllum
- Greater PolygonumPolygonum majusPlantoScan
Greater Polygonum
Polygonum majus
- Polygonum marinensePolygonum marinensePlantoScan
Polygonum marinense
- Polygonum minimumPolygonum minimumPlantoScan
Polygonum minimum
- Soft KnotweedPolygonum mollePlantoScan
Soft Knotweed
Polygonum molle
- Nuttall's KnotweedPolygonum nuttalliiPlantoScan
Nuttall's Knotweed
Polygonum nuttallii
- Polygonum opelousanumPolygonum opelousanumPlantoScan
Polygonum opelousanum
- Polygonum oxyspermumPolygonum oxyspermumPlantoScan
Polygonum oxyspermum
- California KnotweedPolygonum paronychiaPlantoScan
California Knotweed
Polygonum paronychia
- Parry's KnotweedPolygonum parryiPlantoScan
Parry's Knotweed
Polygonum parryi
- Field BindweedPolygonum patulumPlantoScan
Field Bindweed
Polygonum patulum
- Mile-a-minute weedPolygonum perfoliatumPlantoScan
Mile-a-minute weed
Polygonum perfoliatum
- Small KnotweedPolygonum plebeiumPlantoScan
Small Knotweed
Polygonum plebeium
- KnotweedPolygonum posumbuPlantoScan
Knotweed
Polygonum posumbu
- Bushy KnotweedPolygonum ramosissimumPlantoScan
Bushy Knotweed
Polygonum ramosissimum
- Runcinate KnotweedPolygonum runcinatumPlantoScan
Runcinate Knotweed
Polygonum runcinatum
- Field KnotweedPolygonum rurivagumPlantoScan
Field Knotweed
Polygonum rurivagum
- Shasta KnotweedPolygonum shastensePlantoScan
Shasta Knotweed
Polygonum shastense
- Spurry-leaved knotweedPolygonum spergulariiformePlantoScan
Spurry-leaved knotweed
Polygonum spergulariiforme
- Striate knotweedPolygonum striatulumPlantoScan
Striate knotweed
Polygonum striatulum
- Slender KnotweedPolygonum tenuePlantoScan
Slender Knotweed
Polygonum tenue
Browse other genera starting with P, the plant genera A–Z, or the complete plant care guide.