To layer make a small wound on the stem and then cover with a small amount of soil. This will cause the plant to create new roots. Of course, seeds are the best way to propagate morning glory. You can collect the seeds and germinate them at a later date.Click to see full answer. Hereof, can Morning Glories be rooted in water?Morning glories are absolutely able to be rooted in water. I used to bring them in and let them sit in a glass of water. However, the best part of morning glories is that in the late summer, or fall, they will begin to turn their little bloom buds downwards. This means they are about to go to seed.Subsequently, question is, do morning glories come back year after year? In USDA plant hardiness zones 10 and 11, morning glories will grow as perennials. In winter or early spring, cut back morning glory vines grown as perennials to about 6 inches (15 cm.) above the ground. This gets rid of old, tired growth and encourages them to come back strong and vigorous. Similarly one may ask, how do you germinate morning glories? Start seeds three to four weeks before the last expected frost date. Soak the seeds in warm water for 24 hours before planting, or carefully file or chip their hard overcoats to encourage germination, then soak them. Put them in peat pots so the transition into the garden won’t disturb their roots as much.How do you collect morning glory seeds?Once these pods are hard and brown, crack one open. If you find a number of small black seeds, your seeds of morning glories are ready for harvest. Snap off the stems below the seed pods and collect all the pods in a paper bag. Bring them into the house and crack them open over a paper towel-covered plate.