Japanese knotweed
Reynoutria japonica
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Japanese knotweed is a tall, fast-growing deciduous perennial with bamboo-like stems and heart-shaped leaves that produce small white flowers in late summer. It is highly invasive and spreads aggressively through rhizomes; planting is not recommended in most regions.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
Native Range
Eastern Asia
Seasonality
Bloom Season
Harvest Season
Season of Interest
Shrub
Woody multi-stem plants at eye level.
Succession Role
Tolerances & Soil
Function & Care
Edible Parts
Establishment & Care
- Establishment
- Maintenance
- Propagation
Japanese knotweed is a tall, fast-growing deciduous perennial with bamboo-like stems and heart-shaped leaves that produce small white flowers in late summer. It is highly invasive and spreads aggressively through rhizomes; planting is not recommended in most regions.
Climate Match for your location
See how well Japanese knotweed grows in your area.
Enter your ZIP code and we'll show you how this plant fits your local climate.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
Native Range
Eastern Asia
Seasonality
Bloom Season
Harvest Season
Season of Interest
Shrub
Woody multi-stem plants at eye level.
Succession Role
Tolerances & Soil
Function & Care
Edible Parts
Establishment & Care
- Establishment
- Maintenance
- Propagation