Rhododendron catawbiense ‘Cunningham’s White’, commonly known as Cunningham’s White Rhododendron, is a broadleaf evergreen shrub admired for its pure white flower clusters and dependable performance in shady landscapes. Blooming in late spring, this cultivar grows 5 to 8 feet tall and wide, with dense, dark green foliage that offers year-round structure. While often marketed as a form of the native Rhododendron catawbiense, ‘Cunningham’s White’ has complex hybrid origins and is not a true native. It is best suited to ornamental garden use and should be paired with native plants for ecological balance.

Why choose ‘Cunningham’s White’ Rhododendron:

• Classic white blooms: Large trusses of white flowers brighten shady spaces in spring

• Evergreen structure: Dense, glossy foliage offers year-round screening and form

• Cold-hardy and reliable: Tolerates cold climates and filtered light

Cultivating tips:

• Sun exposure: Best in part shade with protection from afternoon sun

• Soil needs: Prefers moist, acidic, well-drained soils with organic matter

• Maintenance: Low-maintenance; prune after bloom if shaping is needed

Designs for your garden:

• Foundation plantings: Evergreen structure softens buildings and hardscapes

• Woodland borders: Beautiful in filtered light with ferns and native understory plants

• Mixed shrub beds: Pairs well with other acid-loving shade plants

Ecological considerations:

• Non-native hybrid: Offers limited value for native pollinators and insects

• Use with natives: Best when combined with native shrubs to support habitat diversity

• Low spread risk: Not invasive, but not ecologically beneficial on its own

Looking for native alternatives?

Rhododendron maximum – Rosebay Rhododendron: A broadleaf evergreen native with leathery foliage and soft pink blooms for shaded woodlands.
Ilex glabra ‘Shamrock’ – Shamrock Inkberry: A compact, native evergreen shrub with glossy foliage that’s excellent for foundation planting.
Clethra alnifolia ‘Ruby Spice’ – Ruby Spice Summersweet: A fragrant, summer-blooming native with rosy flowers that attract pollinators.