Bohemian knotweed (Reynoutria bohemica)
Care, watering, light and tips for Bohemian knotweed on Floravia.
Quick facts
- Family: Polygonaceae
- Difficulty: Moderate care
- Watering: every 7 days
- Light: Partial shade
- Temperature: 10–30 °C
- Toxicity: Toxic to pets
About Bohemian knotweed
Reynoutria bohemica, also known as 'hybrid knotweed', is a vigorous hybrid between Reynoutria japonica and Reynoutria sachalinensis. This perennial plant is characterized by its rapid growth, robust stems, and large, oval to heart-shaped leaves that form dense stands. While ornamental for its lush foliage, its invasive nature makes it more suitable for wild gardens or large areas where its spread can be managed, or in containers to restrict its expansion.
Native range
Central and Eastern Europe
Care tips
It prefers full sun to partial shade and is extremely adaptable to a wide range of soil conditions, though it thrives in moist, well-drained soils. Watering is crucial during dry periods in its early stages, but once established, it tolerates drought. Due to its invasive nature, avoid planting it directly in the ground if uncontrolled spread is not desired; instead, consider growing it in large pots with root barriers. A common mistake to avoid is underestimating its capacity for expansion; control is key from the outset.