FAQs
Q: Is it illegal to have knotweed?
A: No, but under the Wildlife & Countryside Act 1981 you must stop it spreading.
Q: Can I be fined for ignoring knotweed?
A: Yes — under the ASB, Crime and Policing Act 2014, fines and legal orders apply.
Q: Does knotweed damage houses?
A: It can damage patios, drains, and outbuildings. Structural house damage is rare.
Q: How fast does it grow?
A: Up to 10cm/day in summer.
Quick Facts
| Fact | Detail |
|---|---|
| Growth speed | 10cm/day |
| Fines | Unlimited + up to 2 years prison |
| Removal time | 2–5 years (herbicide) |
| Legal duty | Prevent spread |
About the Author
Written by Lee Roberts, PCA-certified knotweed surveyor and Managing Director of Japanese Knotweed Elimination Ltd.
📞 Call us now:
Request a Free Site Visit
Fill in the form below and one of our local team of specialists will get back to you within 24 hours, usually sooner.