shrub RHS Award

PJM Rhododendron

Name: PJM Rhododendron
Brand: Rhododendron
Availability: InStock

Rhododendron 'Pjm'

$89.95

Expertly Curated

Real-Time Pricing

Loved by Designers

Essentials

At a Glance

Plant Type

Shrub

Height

48 inches

Width

48 inches

Light

Full Sun, Partial Sun, Shade

Zones

4, 5, 6, 7, 8

Water

Medium

Humidity

Prefers high humidity

Lifespan

Long-lived shrub

Native To

Cultivated origin

Toxicity

All parts are highly toxic if ingested

The Story

Plant Bio

Rhododendrons are a huge genus of woody plants, mostly shrubs, prized for their spectacular trusses of flowers in spring. They are typically evergreen and require acidic soil. The 'PJM' group is a series of small-leaved rhododendrons known for their exceptional cold hardiness and profuse, early spring blooms of bright lavender-pink. Their leaves turn a handsome mahogany-purple in winter.

Bloom Period:

EarlyLate

Uses & Benefits:

'PJM' is a workhorse of the cold-climate garden, providing a massive, traffic-stopping display of lavender-pink flowers very early in spring. Its small, aromatic evergreen leaves turn a beautiful deep mahogany-purple in winter, offering excellent winter interest.

Its exceptional hardiness, reliability, and manageable size make it a go-to choice for foundation plantings, massing, and informal hedges in shady or woodland settings. It is more sun and heat tolerant than many other rhododendrons.

The very early blooms provide a crucial nectar source for emerging queen bumblebees and other early-season pollinators when food is scarce.

Marketplace

Where to Buy

Garden Goods Direct

In Stock$89.95

Shipping costs Year-round shipping Free shipping

Planting

How to Grow

Select a site with morning sun and afternoon shade
Ensure soil is acidic (pH 4.5-5.5) and well-drained
Dig a wide, shallow hole and amend with pine bark or compost
Plant with the top of the root ball 1-2 inches above soil level
Backfill with amended soil and mulch with pine needles or bark
Water well and maintain consistent moisture, especially in fall

Pro Tip

Plant high in well-amended, acidic soil to ensure excellent drainage and prevent root rot.

Keep It Thriving

Care Guide

Do

Use an acid-forming fertilizer specifically for ericaceous plants
Mulch annually to protect shallow roots and retain moisture
Provide protection from harsh winter winds and sun
Deadhead spent flowers to promote plant energy for growth

Don't

Don't plant in heavy clay or alkaline soil
Avoid cultivating or digging around their shallow roots
Don't let them dry out in late fall before the ground freezes
Don't use aluminum sulfate to acidify soil; it can be toxic

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

Massed foundation planting for year-round structureEarly spring accent in woodland gardensEvergreen informal hedge for shady areas

Companion Plants

Kalmia latifolia Pieris japonica Dryopteris erythrosora Hosta Enkianthus campanulatus

Multiply

Propagation Methods

Good to Know

Common Questions

PJM Rhododendron questions

What zones can PJM Rhododendron grow in?

PJM 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 Rhododendron deer resistant?

Not reliably. Deer may browse PJM Rhododendron, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does PJM Rhododendron bloom?

PJM 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 Rhododendron need full sun?

PJM Rhododendron does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.