Hibiscus Species, Sacramento Rose-Mallow, Delta Hibiscus, River Mallow, Woolly Rose Mallow, Crimson-
Hibiscuslasiocarpus

Family: Malvaceae (mal-VAY-see-ee)
Genus: Hibiscus (hi-BIS-kus)
Species: lasiocarpus (las-ee-oh-KAR-pus)

Synonym:Hibiscus californicus

Synonym:Hibiscus moscheutos subsp. lasiocarpos

Synonym:Hibiscus lasiocarpos

Height

36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)

Spacing

24-36 in. (60-90 cm)

Hardiness

USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)

Sun Exposure

Full Sun

Bloom Color

Rose/Mauve
Magenta (pink-purple)
White/Near White

Bloom Time

Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall

Foliage

Herbaceous
Succulent

Other details

Unknown

Propagation Methods

By dividing rhizomes, tubers, corms or bulbs (including offsets)
From herbaceous stem cuttings
From softwood cuttings
From seed; sow indoors before last frost
Scarify seed before sowing
By simple layering

Seed Collecting

Bag seedheads to capture ripening seed
Allow pods to dry on plant; break open to collect seeds
Allow seedheads to dry on plants; remove and collect seeds

Soil pH requirements

5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information

Non-patented

Foliage Color

Unknown

Bloom Characteristics

Flowers are good for cutting
This plant is attractive to bees, butterflies and/or birds

Water Requirements

Requires consistently moist soil; do not let dry out between waterings
Very high moisture needs; suitable for bogs and water gardens

Where to Grow

Can be grown as an annual