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Polygonaceae
Knotweed Flower
Reynoutria japonica
Unstoppable force and resilience.
- Family
- Polygonaceae
- Genus
- Reynoutria
- Native to
- Japan, China, Korea
- Bloom season
- Summer, Fall
- Type
- perennial
- Height
- 6-10 ft
- Sunlight
- full sun to partial shade
- Soil
- any soil type
- Water
- moderate
- Hardiness
- 4-9
- Lifespan
- perennial
Did you know
- Japanese Knotweed is considered one of the world's 100 worst invasive species and can grow through concrete and asphalt.
- In the UK, having knotweed on your property can reduce its value by up to 15% and complicate mortgage applications.
- A single fragment of root as small as a fingernail can regenerate into an entirely new plant.
- Despite its invasive reputation, the young spring shoots are edible and taste similar to rhubarb, enjoyed in Japanese cuisine.
- The plant is a rich source of resveratrol, the same antioxidant compound found in red wine and grapes.
Color meanings
0
determination
1
invasive strength
2
survival