Light Needs
Mature Height
Mature Spread
Growing Zones
Hibiscus syriacus 'Diana', more commonly known as Diana Rose of Sharon, is one of the best pure white flowering shrubs on the market. Its large, white, saucer-shaped flowers smother the shrub from July through October. The flowers are offset by dark green, leathery foliage that stays full and lush during the growing season. This shrub is highly adaptable and easy to grow. ‘Diana’ was awarded a Gold Medal from the Pennsylvania Horticultural Society and an Award of Garden Merit from the Royal Horticultural Society.
This shrub has a rounded, compact shape that reaches 5 – 8 feet high. Hibiscus syriacus is deciduous and native to eastern Asia. It is highly tolerant to air pollution, salt, heat, humidity and drought. It is also resistant to deer and disease. ‘Diana’ is a knockout in tropical-themed gardens, or add it to a flowering shrub border, butterfly flower garden, or foundation planting to instantly brighten an area.
Diana Rose of Sharon Care
This shrub blooms best in full sun, with at least 6 hours of direct sunlight a day, but tolerates partial shade. It prefers moderately moist, fertile soil, but tolerates poor soil and drought. It is not particular about soil pH, but the soil should drain well. Water ‘Diana’ regularly during the growing season for best flower production. Apply a thick layer of high-quality compost around the base of the shrub, making sure to pull away any mulch from the trunk.
Shape in late winter by cutting branches back to just above a growth node. More severe pruning will result in fewer but larger flowers. It can be propagated with semi-hardwood stem cuttings.
Diana Rose of Sharon Spacing
Space these shrubs approximately 6 feet apart on center to provide room for them to reach their mature size. ‘Diana’ can also be grown in large containers, at least 2 feet in diameter, with drainage holes. Size up the container every year or transplant this shrub to the ground.
* Images courtesy of Bailey Nursery & USDA.GOV
Diana Rose of Sharon Plant Facts
Growing Conditions
- Hardiness ZonesGrowing Zones
- USDA Zones 5 to 8 (perennial); grown as an annual elsewhere (outdoors year-round); grown indoors elsewhere (outdoors year-round); grown in containers elsewhere (grown as a seasonal crop)
- Sun Exposure
- Part Shade to Full Sun (3+ Hours Direct Sun)
- Mature Height
- 5-8 Feet
- Mature Spread
- 4-6 Feet
- Growth Habit
- , Upright
- Water Needs
- Average
Flowers & Foliage
- Flower Colors
- , White
- Flower Description
- White
- Bloom Time
- Summer to Fall
- Blooms On
-
New Wood
?
"Blooms on" tells you which stems produce flowers, which decides when it's safe to prune.
- New Wood: Flowers form on stems that grow this season. Prune in late winter or early spring without losing blooms.
- Old Wood: Flower buds form on last year's stems. Prune right after flowering. Pruning in fall or early spring removes next year's blooms.
- Both New and Old Wood: Blooms on last year's stems and again on new growth, so it flowers even after a hard winter or a mistimed pruning. Prune lightly after the first flush of blooms.
- When to Prune
- Late winter to early spring, before new growth starts
- Foliage Color
- , Green
- Foliage Description
- Green
- Foliage Type
- , Deciduous
- Seasonal Interest
- , Summer Flowering, Fall Flowering
Garden Benefits
Plant Overview
- Common Name
- Diana Rose of Sharon
- Botanical Name
- HIBISCUS SYRIACUS 'DIANA'
- Plant Type
- Shrub
Simple Plant Spacing Calculator
Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on type of plant, time of year, last pruning & many other factors.
Also Known As:
Quart
Plant Age:
~ 6 months - 1 year
Plant Size:
~ 4"-8"
Pot Size:
~ 4.75"H x 4.5"W
Volume:
1.50 quarts
Also Known As:
2.5 Quart Pot
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 8"-12"
Pot Size:
~ 6.5"H x 6.5"W
Volume:
2.20-2.30 quarts
Also Known As:
#1 Container
1 Gallon
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 10"-14"
Pot Size:
~ 7"H x 7.75"W
Volume:
2.26-3.73 quarts
Also Known As:
#2 Container
2 Gallon
Plant Age:
~ 1.5 - 3 years old
Plant Size:
~ 12"-18"
Pot Size:
~ 9.5"H x 9.5"W
Volume:
1.19-1.76 gallons
Also Known As:
#3 Container
3 Gallon
Plant Age:
~ 2 - 4 years old
Plant Size:
~ 12"-30"
Pot Size:
~9.5"H x 11"W
Volume:
2.32-2.76 gallons
Also Known As:
#5 Container
5 Gallon
Plant Age:
~3-4 years old
Plant Size:
~ 20" - 60"
Pot Size:
~11" H x 10 1/2” W
Volume:
3.5 - 4 gallons
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Plants that are currently in stock typically ship within 2-7 business days after your order is placed.
Plant Addicts ships to the lower 48 states within the U.S. Unfortunately, we do not currently ship to Alaska, Hawaii, or internationally.
This plant cannot be shipped to the following states: AK, HI. These restrictions apply only to this specific plant due to agricultural regulations or other limitations. Other plants may still be available for shipping to these states.
If you have any questions about shipping restrictions, feel free to reach out to our team!