I'm constantly pulling out morning glories, if I don't do it at least once a week, they take over. They attach to both fences and will completely cover them if left (and they're horrible to remove if you wait until fall and the vines are dried between the chain links), they come up in flower beds where they twist around any other flower or plant growing and pull it down to the ground, they climb up shrubs and pull the branches down, climb up trees and can cover them if left, they even come up in the the middle of the lawn and will just spread out. I get them usually long before they flower, yet they keep coming back. All summer.
Morning glory seeds can stay viable up to 80 years... I love morning glories, but they're just too much work at my age.
