Rhododendron, Catawba Rhododendron, Iron Clad Rhododendron
Rhododendroncatawbiense 'Boursault'

Height

Spacing
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)

Hardiness
8-10 ft. (2.4-3 m)

Sun Exposure
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)

Danger
Sun to Partial Shade
Light Shade

Bloom Color
All parts of plant are poisonous if ingested

Bloom Time
Rose/Mauve

Foliage
Late Spring/Early Summer

Other details
Grown for foliage
Evergreen
Provides Winter Interest
Smooth

Seed Collecting

Category
From semi-hardwood cuttings
By simple layering

Patent Information

Foliage Color
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Bloom Characteristics

Water Requirements

Where to Grow