Description:
Easily grown, shrubs are usually planted in the perennial
garden because of the abundance of colorful flowers. Too much or too little water or over
fertilization will cause buds to drop from this plant. This plant is capable of
self-sowing to the point of being a nuisance if the soil beneath is suitable for
germinating. Flowers are produced on new growth so prune in late winter, if you wish to
control its size. Pruning is not necessary for flower production. Shrubs are easy to
transplant bare root or balled and burlapped. Plants in flower attract hummingbirds. |
| Common Name: |
Rose of Sharon, Althaea, Shrub Althaea |
| Botanical
Name: |
Hibiscus syriacus |
| Type: |
Deciduous shrub or small tree |
| Soil
Preference: |
This plant
tolerates some drought, occasional wetness and some salt and will also grow in dry to wet
soils but prefers well-drained, loamy, sandy or clay soils with a pH of acidic to slightly
alkaline
(6.8 - 7.7) |
| Light
Requirements: |
Full Sun, Partial Shade |
| Attributes: |
Naturalizing,
Attracts birds, Attracts butterflies |
| Pests: |
Aphids may cover the leaves
with sticky honeydew. Japanese beetles have been known to snack on the flowers in our
region. |
| Diseases: |
Leaf spots can infect the
foliage. Canker can kill branches or entire plants. Flowers may be infected with a blight
caused by a fungus. |
| Care: |
Pruning is not necessary for
flower production. Fertilize with Plant-tone approximately April 1st, May 20th,
July 4th, August 15th & October 30th. Keep granular fertilizers off foliage and
away from stems and trunks. Use 1/2 the recommended rate of fertilizer for new
plantings. Planting Instructions: Trees &
Shrubs |
| Varieties: |
Click on image to view larger size
|
Hibiscus
syriacus 'Blue Marlin'
Rose of Sharon
zones 5-8
|
| Description:
Selected for it's excellent blue color seldom found in other summer blooming
shrubs. 'Blue Marlin' is a vigorous, upright grower. |
| Bloom Color: |
Blue |
| Bloom Time: |
June-Frost |
| Foliage Color: |
Green |
| Height: |
8-12' |
| Spread: |
4-5' |
|
Click on image to view larger size
|
Hibiscus
syriacus 'Diana'
Rose of Sharon
zones 5-9
|
| Description: A triploid with large pure white flowers that remain open at
night; the foliage is a waxy dark green. A National
Arboretum release in 1970. |
| Bloom Color: |
White |
| Bloom Time: |
June-Frost |
| Foliage Color: |
Green |
| Height: |
8-10' |
| Spread: |
6-10' |
|
Click on image to view larger size |
Hibiscus
syriacus 'Helene'
Rose of Sharon
zones 5-9
|
| Description: White flowers with a reddish-purple blush at the base. |
| Bloom Color: |
White |
| Bloom Time: |
June-Frost |
| Foliage Color: |
Green |
| Height: |
10-12' |
| Spread: |
6-8' |
|
Click on image to view larger size |
Hibiscus
syriacus 'Jeanne d' Arc'
Rose of Sharon
zones 5-9
|
| Description: Double white flowers. |
| Bloom Color: |
White |
| Bloom Time: |
June-Frost |
| Foliage Color: |
Green |
| Height: |
10-12' |
| Spread: |
6-12' |
|
Click on image to view larger size |
Hibiscus
syriacus 'Notwoodone'
('Lavender Chiffon' TM)
Rose of Sharon
zones 5-9
|
| Description: New! Large, single lavender flowers adorned with a lacy
center to create an anemone-like bloom. You'll also appreciate this plants strong
growth |
| Bloom Color: |
Lavender |
| Bloom Time: |
June-Frost |
| Foliage Color: |
Green |
| Height: |
8-12' |
| Spread: |
|
|
Click on image to view larger size |
Hibiscus
syriacus 'Lucy'
Rose of Sharon
zones 5-9
|
| Description: Double light red blooms in late summer. |
| Bloom Color: |
Light Red |
| Bloom Time: |
June-Frost |
| Foliage Color: |
Green |
| Height: |
8-12' |
| Spread: |
8-10' |
|
Click on image to view larger size |
Hibiscus
syriacus 'Minerva'
Rose of Sharon
zones 5-9
|
| Description: Lavender flowers with dark red eyes. |
| Bloom Color: |
Lavender |
| Bloom Time: |
June-Frost |
| Foliage Color: |
Green |
| Height: |
10-15' |
| Spread: |
6-10' |
|
Click on image to view larger size |
Hibiscus
syriacus 'Red Heart'
Rose of Sharon
zones 5-9
|
| Description: Large shrub or small tree with medium green foliage producing
single white flowers with a red center. |
| Bloom Color: |
White w/red center |
| Bloom Time: |
June-Frost |
| Foliage Color: |
Green |
| Height: |
10-15' |
| Spread: |
6-10' |
|
Click on image to view larger size |
Hibiscus
syriacus 'White Chiffon' TM
Rose of Sharon
zones 5-9
|
| Description: New! Breathtaking! Large, single white flowers
adorned with a lacy center to create an anemone-like bloom. You'll also appreciate
this plants strong growth |
| Bloom Color: |
White |
| Bloom Time: |
June-Frost |
| Foliage Color: |
Green |
| Height: |
10-15' |
| Spread: |
6-10' |
|
Click on image to view larger size |
Hibiscus
syriacus 'Woodbridge'
Rose of Sharon
zones 5-9
|
| Description: Very erect, upright deciduous shrub or tree. Large
rosy-pink flowers with red center. Blooms summer to fall. |
| Bloom Color: |
Pink |
| Bloom Time: |
June-Frost |
| Foliage Color: |
Green |
| Height: |
10-15' |
| Spread: |
6-10' |
