PJM Compact Rhododendron
Rhododendron 'Pjm Compacta'
Essentials
At a Glance
Plant Type
Shrub
Height
48 inches
Width
48 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8
Water
Medium
Humidity
Moderate
Lifespan
Long-lived shrub
Native To
Hybrid (North American parentage)
Toxicity
All parts are toxic if ingested
The Story
Plant Bio
The PJM group of rhododendrons are exceptionally hardy, small-leaved evergreen shrubs, celebrated for their profuse early spring blooms and excellent winter foliage color. They are a cross between R. carolinianum and R. dauricum. 'PJM Compacta' is a denser, more compact selection of the standard 'PJM Elite'. It features bright lavender-pink flowers and aromatic evergreen leaves that turn a striking mahogany-purple in winter.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Choose a site with acidic, well-drained soil and good air circulation.
- Dig a shallow hole twice the width of the root ball.
- Set the plant with the top of the root ball slightly above soil level.
- Backfill with a mix of native soil and organic matter.
- Water thoroughly to settle the soil around the roots.
- Apply a layer of pine bark or needle mulch, keeping it from the stem.
Pro Tip
Unlike many rhododendrons, PJM varieties are quite sun-tolerant, especially in northern climates, which enhances their winter foliage color.
Keep It Thriving
Care Guide
Do
- Ensure excellent soil drainage.
- Provide consistent moisture, especially before winter freeze-up.
- Mulch to protect the shallow roots and conserve moisture.
- Deadhead spent flowers to promote vegetative growth.
Don't
- Do not plant in heavy clay or alkaline soils.
- Avoid planting too deeply.
- Don't let the plant dry out in its first year.
- Avoid fertilizing late in the season.
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Mulch | ||||||||||||
| Plant | ||||||||||||
| Prune | ||||||||||||
| Winter Prep |
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
PJM Compact Rhododendron questions
What zones can PJM Compact Rhododendron grow in?
PJM Compact 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 PJM Compact Rhododendron deer resistant?
Not reliably. Deer may browse PJM Compact Rhododendron, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does PJM Compact Rhododendron bloom?
PJM Compact Rhododendron typically blooms in early spring through mid-spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does PJM Compact Rhododendron need full sun?
PJM Compact Rhododendron does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
More Rhododendron to compare
Catawba Rhododendron
Rhododendron catawbiense
Double White Rhododendron
Rhododendron x hybrida 'Double White'
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'
Keep exploring
Explore the genus
Collections featuring this plant
Hardy in your zone?
Grow PJM Compact 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.
