• Photo of Rhododendron (PJM Group) (Rhododendron (PJM Group)s)

Plant Profile: Rhododendron (PJM Group)

Names

PJM Rhododendron, Rhododendron

  • Photo of Rhododendron (PJM Group) (Rhododendron (PJM Group)s)

Phonetic Spelling:roh-do-DEN-dron

Genus:Rhododendron

Species:

Family:Ericaceae

This shrub, belonging to the Ericaceae family, can be either evergreen or deciduous. It boasts remarkable winter hardiness but should be shielded from strong winds and prefers well-drained soil, as it does not thrive in overly wet conditions. Rhododendrons and azaleas are acid-loving plants, requiring slightly acidic soil to flourish optimally. They serve as excellent informal hedges and are often overlooked, yet they are widely available in nurseries, making them a fantastic addition to any garden.

Seasons of Interest:

Foliage: Winter, purple; Bloom: Spring, April

Form: Loose, upright

Wildlife Value: These plants can withstand damage from rabbits. The genus Rhododendron is also a host for the specialized bee, Andrena (Andrena) cornelli.

Insects, Diseases, and Other Plant Issues: Rhododendrons can face various insect and disease challenges. Common pests include aphids, borers, lacebugs, leafhoppers, mealybugs, mites, nematodes, scale, thrips, and whiteflies. They are also prone to diseases such as canker, crown rot, root rot, leaf spot, rust, and powdery mildew. While full sun can scorch the leaves, poor drainage can lead to root rot. However, with proper care and placement, a healthy plant should encounter minimal issues.

For more information on Rhododendron.

Rhododendron (PJM Group) Feature Summary

Rhododendron (PJM Group) Image Gallery

Tags

#evergreen
#hardy
#showy flowers
#wildlife plant
#showy
#shade tolerant
#native bees
#winter interest
#rabbit resistant
#dappled shade
#hedges
#specialized bees
#problem for cats
#problem for dogs
#bee friendly
#problem for horses
#buncombe sun and shade

Similar Plants

Rhododendron (PJM Group) Feature Summary

Attributes
Tolerates damage by rabbits. Members of the genus Rhododendron support the following specialized bee: Andrena (Andrena) cornelli.
Flowers
Showy clusters of lavender, pink or rose flowers
Pink
Purple/Lavender
Leaves
Elliptic, hairless, leathery, dark green leaves (to 2.5” long); foliage acquires purple tones in winter.
Elliptical
1-3 inches
Leathery
Whole Plant Traits
Cultural Conditions
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Acid (<6.0)
Good Drainage
4a
4b
5b
5a
6a
6b
7a
7b
8b
8a
High Organic Matter
Landscape
Winter Garden
Specialized Bees
Problem for Cats
Problem for Dogs
Problem for Horses

Rhododendron (PJM Group) Attributes

Rhododendron (PJM Group): Wildlife Value

Tolerates damage by rabbits. Members of the genus Rhododendron support the following specialized bee: Andrena (Andrena) cornelli.

Rhododendron (PJM Group) Flowers

Rhododendron (PJM Group): Flower Description

Showy clusters of lavender, pink or rose flowers

Rhododendron (PJM Group): Flower Color

filter_vintage
Pink
filter_vintage
Purple/Lavender

Rhododendron (PJM Group): Flower Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long Bloom Season
Long-lasting
Showy

Rhododendron (PJM Group): Flower Bloom Time

Winter
Spring
Summer
Fall

Rhododendron (PJM Group) Leaves

Rhododendron (PJM Group): Leaf Description

Elliptic, hairless, leathery, dark green leaves (to 2.5” long); foliage acquires purple tones in winter.

Rhododendron (PJM Group): Leaf Color

spa
Green

Rhododendron (PJM Group): Leaf Shape

Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate

Rhododendron (PJM Group): Hairs Present

No
Yes

Rhododendron (PJM Group): Leaf Length

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Rhododendron (PJM Group): Leaf Feel

Fleshy
Glossy
Leathery
Papery
Prickly
Rough
Rubbery
Slippery
Smooth
Soft
Velvety
Waxy

Rhododendron (PJM Group) Whole Plant Traits

Rhododendron (PJM Group): Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Rhododendron (PJM Group): Texture

Fine
Medium
Coarse

Rhododendron (PJM Group) Cultural Conditions

Rhododendron (PJM Group): Light

Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)

Rhododendron (PJM Group): Soil pH

Acid (<6.0)
Alkaline (>8.0)
Neutral (6.0-8.0)

Rhododendron (PJM Group): Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Rhododendron (PJM Group): USDA Plant Hardiness Zone

thermostat
4a
thermostat
4b
thermostat
5a
thermostat
5b
thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b
thermostat
8a
thermostat
8b

Rhododendron (PJM Group): Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Rhododendron (PJM Group) Stem

Rhododendron (PJM Group): Stem Is Aromatic

No
Yes

Rhododendron (PJM Group) Landscape

Rhododendron (PJM Group): Landscape Theme

Asian Garden
Butterfly Garden
Children's Garden
Cottage Garden
Cutting Garden
Drought Tolerant Garden
Edible Garden
English Garden
Fairy Garden
Garden for the Blind
Native Garden
Nighttime Garden
Pollinator Garden
Rain Garden
Rock Garden
Shade Garden
Water Garden
Winter Garden

Rhododendron (PJM Group): Design Feature

Accent
Barrier
Border
Flowering Tree
Foundation Planting
Hedge
Mass Planting
Screen/Privacy
Security
Shade Tree
Small groups
Small Tree
Specimen
Street Tree
Understory Tree

Rhododendron (PJM Group): Resistance To Challenges

Black Walnut
Compaction
Deer
Diseases
Drought
Dry Soil
Erosion
Fire
Foot Traffic
Heat
Heavy Shade
Humidity
Insect Pests
Pollution
Poor Soil
Rabbits
Salt
Slugs
Squirrels
Storm damage
Urban Conditions
Voles
Wet Soil
Wind

Rhododendron (PJM Group): Attracts

Bats
Bees
Butterflies
Frogs
Hummingbirds
Moths
Pollinators
Predatory Insects
Reptiles
Small Mammals
Songbirds
Specialized Bees

Rhododendron (PJM Group): Problems

Allelopathic
Contact Dermatitis
Frequent Disease Problems
Frequent Insect Problems
Invasive Species
Malodorous
Messy
Poisonous to Humans
Problem for Cats
Problem for Children
Problem for Dogs
Problem for Horses
Short-lived
Spines/Thorns
Weak Wood
Weedy