🔗 Can someone who’s more green fingered than me tell me is this is giant hogweed please? asks Kevin Quirk.

No idea - but the danger was described over 50 years ago.

Turn and run!
Nothing can stop them
Around every river and canal their power is growing
Stamp them out!
We must destroy them
They infiltrate each city with their thick dark warning odour They are invincible
They seem immune to all our herbicidal battering