Japanese Knotwood is growing in from my elderly neighbour's garden. We moved into our house a year ago. The Knotwood has obviously been there a long time. Fortunately it is not near the house. We spend time every two weeks during the growing season 'snapping off' the long shoots. I have managed to remove some roots.
I have contacted the Environmental Agency and they have been helpful but they have not given us any suggestions of how to remove it.
A systemic is apparently the wrong thing to use and care has to be given not to contaminate the surrounding area.
I would be really grateful for any help that you can give.
- 26 May, 2009