Althea
Hibiscus syriacus
Althea Purple
PlantFiles: Rose of Sharon, Althea
Family: Malvaceae (mal-VAY-see-ee)
Genus: Hibiscus (hi-BIS-kus)
Species: syriacus (seer-ee-AK-us)
Height: 4-6 ft. / 6-8 ft. 8-10 ft.
Spacing: 4-6 ft. (1.2-1.8 m)
Hardiness:
USDA Zone 5 through 9
Sun Exposure: Full Sun
Bloom Color: Pink, Purple, White/Near White
Bloom Time: Late Spring/Early Summer, Mid Summer, Late Summer/Early Fall
Foliage: Deciduous
Other details: Average Water Needs;
Water regularly; do not over water
Althea Pink
Height:
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)
Spacing:
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)
Bloom Time: Late Spring/Early Summer
Mid Summer, Late Summer/Early Fall
Althea - White
Althea, Rose of Sharon - White
Hardiness: USDA Zone 5-8
Growth Rate: Fast growth rate
Size at Maturity: 5 to 8 feet by 5 to 6 feet wide
Exposure: Full sun
Soil: Adaptable to many soils, moderate moisture
Deer Resistant
Plant Type: Perennial flower
Scientific Name: Hibiscus syriacus 'Notwoodone'
Althea - Red
Hibiscus syriacus 'Minrosa'
Althea 'Rose Satin ® A large stand out plant with large single, ruffled rose pink flowers adorned with a prominent red eye.
Note Althea Hibiscus is considered a shrub or tree and will not die back to the ground in winter, like Hardy Hibiscus.
Height
8-12 Feet
Spread
3-4 Feet
Come visit us during the Forest Hill Nursery Festival!
