Gerris2 said: Do they look ripe? Seed color should not be on the green side.
OMG wanna trade? Haha I am serious - collect a pile of seeds. If you like Ipomoea purpurea I have a number of cultivars you might like to grow.
I would love to trade for purpurea! The seeds are ripe and black. The seed pod looked like a small chestnut and i just rolled them between my hands to separate them, it's pretty fun. I only picked the ones that were ready, and I separated the perfect seeds from ones that were damaged, probably from being wet when I oppened them. I'll go again on a dry day to get some seeds that are dried on their own- a whole handful! They're slightly smaller than ipomoea alba moonflower seeds.
Picture of some seeds
Picture of seed pods