I've been cleaning up the rooftop garden clearing out all the dying plants and preparing the soil in containers for planting wildflower seed later this fall after the ground freezes. It still has been relatively warm here in Zone 5 Chicago.
This year I grew a lot of morning glories that grew over a system of trellises I built early last Spring. I want to harvest the seed to plant in other areas but many of the morning glories vines are still alive and the seed pods, although closed, are still green and it appears the seeds are still forming inside. Is it OK to just harvest these green pods and place them in a coffee can and let them dry out? Will the seeds form if they get separated from the mother vine? I'd really like to clean out the vines if possible. The problem I see with waiting until the seeds form in the pods is that there is a small window of opportunity to harvest before the pods break open and the seeds blow away. It would be very convenient if I could harvest all the seed pods all at once and be done with it. Does anyone have insight on this?