Photo by Melody

PlantFiles: Flower Of An Hour, Venice Mallow
Hibiscus trionum 'Luyona'

Family: Malvaceae (mal-VAY-see-ee) (Info)
Genus: Hibiscus (hi-BIS-kus) (Info)
Species: trionum (try-OH-num) (Info)
Cultivar: Luyona

» View all varieties of Hibiscus

One member has or wants this plant for trade.

24-36 in. (60-90 cm)

12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)

Not Applicable

Sun Exposure:
Full Sun

Bloom Color:
Pale Yellow

Bloom Time:
Mid Summer
Late Summer/Early Fall
Mid Fall


Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; sow indoors before last frost
From seed; direct sow after last frost

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored


1 positive
1 neutral
No negatives

Gardeners' Notes:

Positive klsklar On Jun 1, 2009, klsklar from Newhall, CA wrote:

I found this plant charming from the moment I first saw it and my only misfortune with it has been how hard it is to find. When I moved, it took me years to find another vendor to replace it in my new garden. Again, seldom has a small flower's charm so touched me as this little flower of the hour. I have had no problems with invasiveness.

Neutral berrygirl On Mar 5, 2007, berrygirl from Braselton, GA (Zone 7b) wrote:

Masses of cream flowers with contrasting dark centers on bushy plants. Inflated calyces are good for cutting. Flowers are short-lived but numerous, as they replace themselves daily. Very easy to grow. Hardy annual, 24-28" tall.


This plant has been said to grow in the following regions:

Newhall, California
Barbourville, Kentucky

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