Beginner Gardening: Morning Glory Seeds - Cut them Green or fully seeded?, 1 by hburry

hburry wrote:
Should I cut off the Green morning glory flower and allow it to dry indoors and turn to seed, OR should I leave it outside and wait until it has turned brown and dried out?

In the past I have let them turn brown and dry out completely, but I it becomes a mess and many of them fall out and re-seed.

What is the recommended method to get as many seeds as possible?

See pic of Green cut flower, and flower dried out and turned brown with seeds falling out.