Unfortunately something has got to my peas, they only just produced flowers, haven't had that happen before. Anyone any ideas what got to them, I've attached photos, but basically it looks a bit like the stalks with the flowers have been chomped off, not sure its very clear in the pics. More importantly what can I do to prevent this happening again. They were covered with enviromesh originally until they were mature enough. Should I just leave that on, or do the flowers need pollinating? When netting is used, the plants seem to get tangled up in it and its difficult to harvest them. Any suggestions at all