| Common Name | Red Top Knotweed |
| Family | Polygonaceae |
| Genus | Persicaria |
| Species | Amplexicaulis |
| Origin | China, Japan |
| Blooming | Summer to autumn, July to October |
| Leaf Color | Green with bluish tints |
| Sunlight | Half-shade |
| Category | Outdoor plants |
| Pet Friendly | Yes |
Moisture-retentive but well-draining loam or clay soil
High moisture requirements; keep soil consistently moist during growth
Full sun for best flowering, tolerates partial shade in hot climates
Apply balanced liquid fertilizer monthly from spring to late summer
Deadhead spent flowers to encourage reblooming; cut back dead foliage in autumn
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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