Ornamental morning glories are annuals and do not overwinter here. I have never seen (or heard) of anyone having issues with them becoming a nuisance. In fact, it is not often hot enough in the summer for them to bloom to their full capacity unless started quite early.

Giant morning glory is the big, invasive weedy perennial with white flowers you may be referring to here as bindweed.

Thanks bboy and Gardengal. That is what I thought but I wanted the confirmation from our resident experts. I might try some MG on a sheltered wall this summer.

I've had good success growing the gorgeous blue morning glory (Ipomoea tricolor) on a south facing trellis in years with normal spring temps. Depending on your site, they may not do so well in a really wet and cold year. It takes some deadheading to keep the blooms coming at maximum capacity all summer, but really worth the effort. It has self seeded for me, but just a little bit, and they are easy to recognize and pull.