Hi everyone; I need to know, when do we know, when the pods are ready for harvest, on hosta? Do they turn brown before they open up? I'm leaving for 2 weeks, and wondering if the seed pods will be OK on the plant until I come back? They are green right now, with a tinge of purplish, green (could be from sun). I promised some seeds, and I don't want to lose them. Thanks for your respond.