Posted: 10/05/2014 at 10:36
I must admit Neil - I've never seen them in pots. What you describe in the pots would normally be more like vine weevil damage - they like potted plants in particular and do the same to roots as the leatherjackets do to grass. They're white and more maggotty looking so check the roots of anything you have in pots in case it's two separate problems.
Interestingly, on another thread this morning, someone has just heard that there's been a 40% increase in leatherjackets here in Scotland which is causing issues with grassland.