Double White Rhododendron
Rhododendron x hybrida 'Double White'
Essentials
At a Glance
Plant Type
Shrub
Height
60 inches
Width
60 inches
Light
Partial Sun, Shade
Zones
4, 5, 6, 7, 8
Water
Requires consistently moist soil
Humidity
Thrives in moderate to high humidity
Lifespan
Decades
Native To
Hybrid
Toxicity
All parts are highly toxic if ingested
The Story
Plant Bio
Rhododendron 'Double White' is a deciduous azalea prized for its showy clusters of fragrant, double white flowers that bloom in late spring, often before the leaves fully emerge. This cultivar is distinguished by its double-layered white blossoms, which provide a lush, ornamental appearance and add a refined elegance to garden borders and woodland gardens.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Tuck mature plants into well-draining, acidic soil in early spring.
- Water thoroughly after planting, ensuring soil remains moist.
- Apply a layer of mulch to conserve moisture and regulate soil temperature.
- Prune after flowering to shape and remove dead or damaged branches.
- Fertilize with an acid-loving plant fertilizer in early spring and mid-summer.
- Monitor for pests and diseases, treating organically if possible.
Pro Tip
Plant in partial shade with acidic, well-drained soil for best blooms.
Keep It Thriving
Care Guide
Do
- Water regularly to keep soil moist but not waterlogged 🌱
- Mulch annually to retain moisture and suppress weeds
- Prune lightly after flowering to maintain shape
Don't
- Avoid planting in alkaline soil, which can cause yellowing
- Do not over-fertilize, as it can harm roots
- Refrain from pruning in late summer or fall
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Mulch | ||||||||||||
| Prune |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Double White Rhododendron questions
What zones can Double White Rhododendron grow in?
Double White Rhododendron is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Double White Rhododendron deer resistant?
Not reliably. Deer may browse Double White Rhododendron, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Double White Rhododendron bloom?
Double White Rhododendron typically blooms in late spring through late spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Double White Rhododendron need full sun?
Double White Rhododendron does best in part shade.
More Rhododendron to compare
Catawba Rhododendron
Rhododendron catawbiense
Great Laurel Rhododendron
Rhododendron maximum
Bone Hardy Azalea
Rhododendron obtusum 'Bone Hardy Azalea Sampler'
Praecox Rhododendron
Rhododendron catawbiense 'Praecox'
Elite Star Rhododendron
Rhododendron x hybrida 'Elite Star'
Flame Azalea
Rhododendron calendulaceum
Keep exploring
Explore the genus
Collections featuring this plant
Hardy in your zone?
Grow Double White Rhododendron with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
