| Common Name | Clustered Knotweed |
| Family | Polygonaceae |
| Genus | Persicaria |
| Species | Capitata |
| Origin | East Asia |
| Blooming | Late summer to autumn, dense red/pink flower heads. |
| Leaf Color | Bright green |
| Sunlight | Half-shade |
| Category | Outdoor plants |
| Pet Friendly | Yes |
Well-draining loamy soil, enriched with organic matter.
Keep soil consistently moist during growth phase, allow to dry slightly between waterings. Reduce watering in winter dormancy.
Prefers full sun for best flowering, tolerates partial shade in hotter climates.
Apply balanced liquid fertilizer monthly during active growing season (Spring to Autumn).
Deadhead spent flower heads to encourage longevity; trim back after flowering for compact growth.
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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