The Q&A Archives: Morning Glory - Heavenly Blue

Question: In zone 10 here, 2 mi's from the ocean in LA. I have the seeds sprouted. I believe that technically this is an annual. Is it?

I plan to plant them along two walls getting broken up southern exposure,. i.e., pretty good sun for parts of the day.

Then I got thinking, maybe I'd be better off with a prennial variety. Or, since I'm in such a moderate climate, maybe they will just keep growing year after year.(after all I've got a 3 year old bell pepper plant in a pot)

PS. a couple of the plants will be grown in pots along the driveway (adjacent to a block wall). Others in little cutouts in the concrete.

PS, I do want this to stay green the entire year. (I'll put up wires for them to climb on.)

Answer: Your Heavenly Blue Morning Glories will be annual plants, even in your mild climate. Annuals are defined as plants that grow, flower, and produce seed all in one season. It's a genetic thing. (Your pepper plant grows as a perennial in mild climates even though it's usually considered an annual by most gardeners.) Morning glories (Ipomoea tricolor) do not like to be moved once they've begun to grow, so be sure to sow the seeds directly in the ground, or in they pots they will inhabiting.

There are perennials in this same family. If you want the plants to reappear year after year you might want to grow Ipomoea acuminata (Blue Dawn Flower), or Ipomoea quamoclit (Cypress Vine/Cardinal Climber). Both these plants will thrive in full sunshine with very little water once established.

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