One of my beans has overgrown the wigwam by about 18 inches
?Any advice please
Cut off....leave....re attach
I mean over grown at the top of the canes so its waving around in the breeze
Just nip the top out - it'll grow sideshoots and lots more beans
Yep. Standard practice - makes them bushier as well as easier to reach and stops them collapsing. Just make sure you have plenty of room to store them - freezer or salted.