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

Hibiscus lasiocarpus

Family: Malvaceae (mal-VAY-see-ee) (Info)
Genus: Hibiscus (hi-BIS-kus) (Info)
Species: lasiocarpus (las-ee-oh-KAR-pus) (Info)
Synonym:Hibiscus californicus
Synonym:Hibiscus moscheutos subsp. lasiocarpos
Synonym:Hibiscus lasiocarpos
» View all varieties of Hibiscus


36-48 in. (90-120 cm)

4-6 ft. (1.2-1.8 m)

6-8 ft. (1.8-2.4 m)


24-36 in. (60-90 cm)


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:


Magenta (Pink-Purple)

White/Near White

Bloom Time:

Late Spring/Early Summer

Mid Summer

Late Summer/Early Fall




Other details:

This plant may be considered a protected species; check before digging or gathering 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:


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

Foliage Color:

Unknown - Tell us

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:

Suitable for growing in containers


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

Chico, California

Los Angeles, California

Oceanside, California

Paradise, California

Sacramento, California

Stockton, California

Atlantic Beach, Florida

Brooksville, Florida

Greenville, Indiana

Deridder, Louisiana

La Place, Louisiana

Mason, Michigan

Minneapolis, Minnesota

Aurora, Missouri

Jackson, Missouri

Croton On Hudson, New York

Winston Salem, North Carolina

Arlington, Texas

Bristow, Virginia

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Gardeners' Notes:


On Jul 30, 2016, birder17 from Jackson, MO (Zone 6b) wrote:

This is native to Missouri. It just started blooming the last week in July. It just showed up in my garden. Another one has popped up along the blacktop roadside. It's on a slope so certainly not a "moist" area. I give it 0 care. It blooms when other plants are starting to fade.


On Jun 24, 2011, ogon from Paradise, CA (Zone 9a) wrote:

Huge white hibiscus flowers with red centers. Native to riparian areas around the Sacramento River in California, and can also be found in other states. Unique from many other hibiscus species in that the leaves and stems are covered in fine hairs. Since it grows in moist soil near the river, it tolerates garden conditions much better than most other California native plants, which tend to prefer dry summer conditions.