Hibiscus trionum

Also Known As

Hibiscus trionum 'Bladder Ketmia'
Bladder Ketmia
Flower Of An Hour
Flower-of-an-Hour
Venice Mallow

Plant type

perennial

size

H: 20"
W: 12"

planting zones

9a-10b

More Options

Hibiscus trionum plant details

Hibiscus trionum is a broadleaf deciduous perennial with green foliage. In summer chocolate and yellow flowers emerge. Attracts bees and beneficial insects making it an excellent addition to pollinator gardens. Grows well with sun and even moisture - regular water. Adapts to various soil conditions. Does well in average, rich and well-drained soil. A good option if you're seeking something heat tolerant.

CHARACTERISTICS OF Hibiscus trionum

Plant type: perennial
Plant family: malvaceae
Foliage: deciduous green
Mature size: 12 IN wide, 20 IN tall
Flowers: chocolate and yellow blooms in summer
Uses: border plant, cottage garden, self-sowing, showy

GROWING CONDITIONS for Hibiscus trionum

USDA Zones: 9a - 10b
Sun exposure: sun
Watering frequency: even moisture - regular
Resistant to: heat
Soil needs: average, rich and well-drained

Nursery contributed plant descriptions

Bushy branching compact plants blooming all summer with chocolate centered silvery yellow 2" hibiscus flowers. Grows to 14" in sunny location, hardy in zones 10-12, grown as an annual in colder locations. Usually will reseed itself.

By: Accents for Home and Garden

In Annuals for Connoisseurs, the author, Wayne Winterrowd writes: “Once most gardeners have grown Hibiscus trionum they find they never want to be without it. . . as it works magic on the gardener’s heart.” Lovely, chocolate centered, silvery yellow, 2” flowers are borne all Summer on this extremely easy to grow, many branched plant which will form a PERENNIAL shrub 20” x 12” by the Bay. THRIVES IN ANY SOIL. Due to Agricultural Restrictions we cannot ship this plant to Colorado.