| Common Name | Pennsylvania Knotweed |
| Family | Polygonaceae |
| Genus | Polygonum |
| Species | Pensylvanicum |
| Origin | Eastern North America |
| Blooming | Late summer to autumn |
| Leaf Color | Green to reddish-green |
| Sunlight | Half-shade |
| Category | Outdoor plants |
| Pet Friendly | No |
Moist fertile loam; tolerates wet soils better than dry
Keep soil consistently moist; highly sensitive to drought conditions during summer growth
Full sun preferred for best flowering, partial shade acceptable in hot climates
Low nutrient needs, benefits from occasional balanced fertilizer if grown in poor soil
Deadhead spent flowers to encourage further blooming or remove after seed set for self-seeding
These are the insects and pathogens that commonly interact with this plant, including pests, parasites, and organisms typically associated with its care.
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