Botanical profile

Rhododendron catawbiense 'Grandiflorum'

Latin name
Rhododendron catawbiense 'Grandiflorum'
Common name
Rhododendron catawbiense 'Grandiflorum'
Type
Shrub
Family
Ericaceae

Rhododendron catawbiense 'Grandiflorum', also known as Catawba rhododendron 'Grandiflorum', is a large evergreen ornamental shrub renowned for its vigor and spectacular flowering. This classic variety forms a large, dense, rounded bush that adds structure and volume to shrub beds, woodland gardens, and shaded landscape designs. In spring, large spherical inflorescences appear, covered with numerous lavender to light purple flowers, often marked with small darker spots in the throat. This abundant bloom creates a very decorative effect and attracts pollinating insects. Its dark green, thick, and slightly glossy evergreen foliage remains attractive all year round and contributes to the garden's structure even in winter. Very hardy and vigorous, this rhododendron prefers acidic soils, rich in organic matter, and well-drained.

Care guide

Growing conditions

Light, soil, water and hardiness

Hardiness zone
Zone 4
Exposure
Partial shade
Watering
Moderate, maintain cool and acidic soil
Fertilization
Fertilizer for acid-loving plants in spring
Soil type
Acid, organically rich, well-drained soil
Minimum temperature
-32 °F
Plant appearance

Blooming, foliage and shape

Blooming period
Spring
Flower color
Purple
Fruiting
Dry, unornamental capsules
Foliage color
Green
Foliage type
Persistent
Shape
Dense, rounded shrub
Garden structure

Size and growth

Height
10 ft (3 m)
Width
10 ft (3 m)
Growth rate
Moderate
Not recommended for pets
Not recommended for pets

Pets

Butterflies
Plants that attract butterflies

Butterflies

Hummingbirds
Flowers that attract hummingbirds

Hummingbirds

The availability of our plants varies depending on arrivals, seasons, nursery production and supplier availability. Some varieties may be offered for a limited time only, depending on their natural cycle or current stock. These plant profiles are designed to guide and inspire you when choosing plants for the garden, landscaping projects, containers or long-lasting outdoor arrangements.