Hibiscus, Rose of Sharon, Shrub Althea 'Double Purple'

Hibiscus syriacus

Family: Malvaceae (mal-VAY-see-ee) (Info)
Genus: Hibiscus (hi-BIS-kus) (Info)
Species: syriacus (seer-ee-AK-us) (Info)
Cultivar: Double Purple
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Height:

8-10 ft. (2.4-3 m)

Spacing:

Unknown - Tell us

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)

Sun Exposure:

Sun to Partial Shade

Bloom Color:

Medium Purple

Bloom Time:

Mid Summer

Late Summer/Early Fall

Foliage:

Deciduous

Smooth

Other details:

Unknown - Tell us

Soil pH requirements:

4.5 or below (very acidic)

4.6 to 5.0 (highly acidic)

5.1 to 5.5 (strongly acidic)

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:

Unknown - Tell us

Propagation Methods:

From herbaceous stem cuttings

From woody stem cuttings

From softwood cuttings

From semi-hardwood cuttings

Seed Collecting:

Unknown - Tell us

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us

Regional

This plant is said to grow outdoors in the following regions:

Cabot, Arkansas

Inverness, Florida

Chillicothe, Illinois

Danvers, Massachusetts

Oxford, Michigan

Waynesboro, Mississippi

New Bern, North Carolina

Cleveland, Ohio

Lafayette, Tennessee

Nashville, Tennessee

Center, Texas

San Antonio, Texas(2 reports)

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Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Aug 22, 2018, atirani from Ottawa,
Canada wrote:

I had this in zone 4B in almost full shade, wet clay soil. Needless to say, it didn't like this spot. The cool spot made this plant bloom much later in the season, and became a dieback perennial. Had it been in warmer sunnier spot, it would have turned into a huge bush like my other rose of sharons. My advice for zone 4 is to plant in the sunniest spot in the garden, otherwise it will turn into an ugly dieback perennial.

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