Sowing instructions Morning glory can be direct seeded into the soil after the last frost, but you will have much earlier blooms if you plant indoors 5-6 weeks ahead of time. They are a little tricky to transfer. Use little peat pots that can be put directly into the soil where you want the plant to grow. The seed of the morning glory is very hard. I soak mine overnight before planting to soften the hard shell. Growing morning glories is easy; keeping them where you want them is a little more difficult. You will notice that soon after a bloom fades a perfectly round capsule forms. This is full of tiny black seeds. Once it dries the capsule opens and morning glory seeds drop everywhere. Unless you are so diligent as to cut off EVERY pod they will spread and reseed.