September's Flower, and It Lasts One Morning
Morning glory is a wide flat trumpet, most famously a pure sky blue with a white throat, opening at dawn on a twining vine and closing by early afternoon. Each individual flower lasts exactly one morning, and the plant simply produces another the next day.
It is one of September's birth flowers, alongside the aster. It is also completely impractical as a cut flower for the obvious reason, and the seeds carry compounds serious enough that some seed is treated to deter misuse.
Heavenly Blue; the famous one
Grandpa Ott and similar
Pearly Gates; also the night-blooming moonflower
Softer garden varieties
Unusual bred shades
Ipomoea tricolor; the classic sky blue
Deep purple with a red star; an heirloom variety
Ipomoea alba; white, opens at dusk, strongly scented
Convolvulus; the invasive weed relative, not the same plant
Each bloom lasts one morning.
Open at dawn, closed by afternoon.
Easy from seed on any support.
Genuinely, and treated seed more so.
There is nothing to buy cut. Each flower opens at dawn and is finished by early afternoon, so no cut trade exists and none is possible. What you buy is seed, which is cheap and widely available. Soak it overnight before sowing, since the coat is hard, and give it a support before it needs one because it grows fast. For a September birthday, asters are the month's other birth flower and are a real cut flower.
Midsummer until the first frost, flowering more heavily as the season goes on. It is grown from seed each year in most climates. There is no commercial cut flower activity at all, and any florist asked for morning glory will suggest something else, usually asters or a blue delphinium if the colour is the point.
Asters are September's other birth flower and are widely available. For the sky blue specifically, delphinium and nigella are the realistic cut alternatives. Clematis gives a large flat climber's flower in a vase, briefly. Moonflower, the same genus, is worth planting alongside it since it opens as the morning glories close and carries a strong evening scent.
The seeds are toxic and this is not a token warning. They contain lysergic acid amide, and eating them causes nausea, vomiting, hallucinations and cardiovascular effects. Some commercial seed is deliberately treated with chemicals to make misuse unpleasant, which makes it more dangerous rather than less if eaten. Keep seed packets away from children and pets. The plant is also on the ASPCA toxic list for cats and dogs.
Ipomoea alba is the same genus and opens at dusk, just as the morning glories close, with a powerful scent. Grown on the same support you get flowers around the clock.
Field bindweed looks similar and is a serious perennial weed with roots that go down metres. Morning glory is an annual and dies at the first frost. They are different genera.
The seed coat is hard and germination is patchy without an overnight soak or a light nick with a knife. It is the difference between a full trellis and a few straggly vines.
No. Each bloom opens at dawn and closes by early afternoon, so it cannot be cut, shipped or arranged. For a September birthday, the aster is the month's other birth flower and is widely available.
Yes, genuinely. They contain lysergic acid amide and cause nausea, vomiting and hallucinations. Some commercial seed is treated with chemicals specifically to deter misuse, which makes eating it worse rather than safer. Keep packets away from children.
Ipomoea alba, the same genus as morning glory but opening at dusk rather than dawn, with large white flowers and a strong sweet scent. Grown together on one support they give flowers morning and evening.
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