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Hardy Hibiscus, Rose Mallow, Swamp Mallow
Hibiscus moscheutos 'Old Yella'

Family: Malvaceae (mal-VAY-see-ee) (Info)
Genus: Hibiscus (hi-BIS-kus) (Info)
Species: moscheutos (mos-KEW-tos) (Info)
Cultivar: Old Yella
Additional cultivar information:(PP13630, aka Old Yellow)
Hybridized by Fleming
Registered or introduced: 2000
» View all varieties of Hibiscus

Height:

36-48 in. (90-120 cm)

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)

Sun Exposure:

Full Sun

Bloom Color:

Scarlet (Dark Red)

Pale Yellow

Bloom Time:

Mid Summer

Late Summer/Early Fall

Blooms repeatedly

Foliage:

Herbaceous

Other details:

Average Water Needs; Water regularly; do not overwater

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:

Patented

Propagation Methods:

From herbaceous stem cuttings

From softwood cuttings

Seed Collecting:

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Regional

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

Arley, Alabama

San Jose, California

Clarkesville, Georgia

Chicago, Illinois

Norco, Louisiana

Royal Oak, Michigan

Minneapolis, Minnesota

Hudson, New Hampshire

Ellenboro, North Carolina

Lansdowne, Pennsylvania

Temple, Texas

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Gardeners' Notes:

0
positives
1
neutral
0
negatives
RatingContent
Neutral

On Feb 4, 2006, Gabrielle from (Zone 5a) wrote:

Also known as 'Old Yellow'. Dinner-plate-sized flowers atop robust, shrublike plants from mid to late summer. Pale yellow buds open to 10-12" creamy-white slightly ruffled flowers with red eye. Attracts hummingbirds. My information says it is hardy to zone 4.