• Photo of Rhododendron mucronulatum (Rhododendron mucronulatums)

Plant Profile: Rhododendron mucronulatum

Names

Korean Rhododendron

  • Photo of Rhododendron mucronulatum (Rhododendron mucronulatums)

Phonetic Spelling:rho-doh-DEN-dron myoo-kron-yoo-LAY-tum

Genus:Rhododendron

Species:mucronulatum

Family:

Korean Rhododendron is a deciduous shrub belonging to the Ericaceae family. It boasts stunning pink flowers that bloom from late winter to early spring, preceding the emergence of its diamond-shaped leaves. This versatile plant can serve as a houseplant or be incorporated into landscape designs as a cultivated shrub in wooded or natural settings.

**Seasons of Interest:**
- **Bloom:** Late Winter/Early Spring

**Insects, Diseases, and Other Plant Issues:**
Rhododendrons are prone to various insect infestations and diseases. Common pests include aphids, borers, lacebugs, leafhoppers, mealybugs, mites, nematodes, scale, thrips, and whiteflies. They may also suffer from diseases such as canker, crown rot, root rot, leaf spot, rust, and powdery mildew. Exposure to full sun can lead to leaf scorch, while poor soil drainage can cause root rot. However, with proper care and placement, a healthy plant can experience minimal issues. Additionally, deer often damage this plant, and its early flowering makes it vulnerable to spring frosts.

For further details on Rhododendron, please refer to additional resources.

Rhododendron mucronulatum Feature Summary

Rhododendron mucronulatum Image Gallery

Tags

#showy flowers
#deciduous
#wildlife plant
#pink flowers
#nectar plant
#winter interest
#specialized bees
#pollinator plant
#early spring flowers
#nectar plant early spring
#problem for cats
#late winter flowers
#problem for dogs
#bee friendly
#problem for horses
#woodlands
#nectar plant late winter

Similar Plants

Rhododendron mucronulatum Feature Summary

Attributes
Northeastern North America
Members of the genus Rhododendron support the following specialized bee: Andrena (Andrena) cornelli.
Flowers
Bright rosy pink to pinkish purple flowers in spring before leaves emerge
Pink
Purple/Lavender
Spring
Winter
Leaves
Alternate, simple, medium green leaves; aromatic when crushed; yellow, bronzy crimson red fall color
Green
Gold/Yellow
Brown/Copper
Gold/Yellow
Red/Burgundy
Poisonous to Humans
Salivation, watering of eyes and nose, abdominal pain, loss of energy, depression, nausea and vomiting, diarrhea, weakness, cardiac failure, difficult breathing, progressive paralysis of arms and legs, coma.
Andromedotoxin, Grayantoxin
Seeds
Leaves
Stems
Sap/Juice
Flowers
Bark
Fruits
Roots
Whole Plant Traits
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Good Drainage
Landscape
Pollinator Garden
Winter Garden
Woodland
Naturalized Area
Pollinators
Specialized Bees
Problem for Cats
Problem for Dogs
Problem for Horses

Rhododendron mucronulatum Attributes

Rhododendron mucronulatum: Country Or Region Of Origin

Northeastern North America

Rhododendron mucronulatum: Wildlife Value

Members of the genus Rhododendron support the following specialized bee: Andrena (Andrena) cornelli.

Rhododendron mucronulatum Flowers

Rhododendron mucronulatum: Flower Description

Bright rosy pink to pinkish purple flowers in spring before leaves emerge

Rhododendron mucronulatum: Flower Color

filter_vintage
Pink
filter_vintage
Purple/Lavender

Rhododendron mucronulatum: Flower Value To Gardener

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

Rhododendron mucronulatum: Flower Bloom Time

Winter
Spring
Summer
Fall

Rhododendron mucronulatum Leaves

Rhododendron mucronulatum: Leaf Description

Alternate, simple, medium green leaves; aromatic when crushed; yellow, bronzy crimson red fall color

Rhododendron mucronulatum: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Rhododendron mucronulatum: Leaf Color

spa
Gold/Yellow
spa
Green

Rhododendron mucronulatum: Deciduous Leaf Fall Color

spa
Brown/Copper
spa
Gold/Yellow
spa
Red/Burgundy

Rhododendron mucronulatum: Leaf Type

Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple

Rhododendron mucronulatum: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Rhododendron mucronulatum: Leaf Margin

Crenate
Crenulate
Dentate
Denticulate
Doubly Crenate
Doubly Dentate
Doubly Serrate
Entire
Lobed
Serrate
Sinuate
Undulate

Rhododendron mucronulatum: Hairs Present

No
Yes

Rhododendron mucronulatum: Leaf Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long-lasting
Showy

Rhododendron mucronulatum Poisonous to Humans

Rhododendron mucronulatum: Poison Symptoms

Salivation, watering of eyes and nose, abdominal pain, loss of energy, depression, nausea and vomiting, diarrhea, weakness, cardiac failure, difficult breathing, progressive paralysis of arms and legs, coma.

Rhododendron mucronulatum: Poison Toxic Principle

Andromedotoxin, Grayantoxin

Rhododendron mucronulatum: Poison Severity

High
Low
Medium

Rhododendron mucronulatum: Causes Contact Dermatitis

No
Yes

Rhododendron mucronulatum: Poison Part

Bark
Flowers
Fruits
Leaves
Roots
Sap/Juice
Seeds
Stems

Rhododendron mucronulatum Whole Plant Traits

Rhododendron mucronulatum: 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 mucronulatum: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Rhododendron mucronulatum: Maintenance

Low
Medium
High

Rhododendron mucronulatum: Texture

Fine
Medium
Coarse

Rhododendron mucronulatum Cultural Conditions

Rhododendron mucronulatum: 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 mucronulatum: Soil Drainage

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

Rhododendron mucronulatum Stem

Rhododendron mucronulatum: Stem Is Aromatic

No
Yes

Rhododendron mucronulatum Landscape

Rhododendron mucronulatum: 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 mucronulatum: Landscape Location

Coastal
Container
Hanging Baskets
Houseplants
Lawn
Meadow
Naturalized Area
Near Septic
Patio
Pond
Pool/Hardscape
Recreational Play Area
Riparian
Rock Wall
Slope/Bank
Small Space
Vertical Spaces
Walkways
Woodland

Rhododendron mucronulatum: Attracts

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

Rhododendron mucronulatum: 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