On 30/05/2020 12:25, Ian Jackson wrote:


Yes - that definitely looks more like it than the woolly thistle. Google
searches indicate that it can grow to 1.5m, but mine is more like 1.8 -
and it's still growing. However, I think it's now spending more time
forming seed heads.
https://preview.tinyurl.com/ydd43law

If it _is_ spear thistle, and it's forming seeds, you need to do something.

https://www.gov.uk/government/publications/identification-of-injurious-weeds

http://www.legislation.gov.uk/ukpga/Eliz2/7-8/54/contents

It's on a list of weeds that you are supposed to destroy; you can be
fined if you don't after a notice has been served.

Letting it go to seed might be seen as a bad move. But make sure it is
that thistle, not one of the rare ones!

Andy