species 895 observations
Himalayan Knotweed
Koenigia polystachya
Field notes
Koenigia polystachya is a species of flowering plant in the knotweed family, known by the common names Himalayan knotweed and cultivated knotweed. It has several regularly used synonyms, including Polygonum polystachyum, Aconogonon polystachyum and Persicaria wallichii.
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24
native animals
supported in the US
supported in the US
Range
Greener is more native, amber more introduced; paler is less certain. How this was decided
Key traits
- Layer
- Herbaceous plants
- Plant type
- Perennial Wildflower
From USDA PLANTS.