Flower of an Hour (Hibiscus trionum)

Flower-of-an-Hour is a hibiscus native to Europe named for its ephemeral flowering window.

Size: Packet: 50 seeds (0.12 gram)

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Flower of an Hour (Hibiscus trionum) - also called bladder hibiscus, bladder weed, or venice mallow - is an annual hibiscus family plant that forms multiple striking cream color blossoms with purple centers. Easy to start from seed, plants reach 4-5 feet tall and flowers give way to papery seed pods. Plants are frost sensitive.

Cannot be shipped to Washington State.

Common Name:
Flower-of-an-Hour
Scientific Name:
Hibiscus trionum
Plant Lifespan:
Annual
Cold Hardiness (F):
Zone 9b (25 to 30)
Light Requirements:
Full Sun (min. 6 hours a day)
Seed In:
Mid Spring (Apr 21 - May 20), Late Spring (May 21 - Jun 20), Early Summer (Jun 21 - Jul 20), and Mid Summer (Jul 21 - Aug 20)
Seeding Depth:
1/8 in.
Days to Sprout:
3-7
Optimal Soil Temperature (F):
70
Plant Spacing:
18-36 in.
Plant Height:
3 ft.
Average Days from Seed to Harvest:
100
Meet Your Grower
Quin Shakra · Ojai, California

Neon was the first flower planted on the farm and among the first varieties Plant Good Seed released.

"Ivan's Meadow is me and my feline friend Ivan's adventures with plants in place. Operating on Kitty Standard Time."

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