Rhododendron Species, Tree Rhododendron
Rhododendronarboreum

Synonym:Rhododendron puniceum

Synonym:Rhododendron windsorii

Height

Spacing
8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)
15-20 ft. (4.7-6 m)

Hardiness
10-12 ft. (3-3.6 m)

Sun Exposure
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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)

Danger
Full Sun
Sun to Partial Shade

Bloom Color
Parts of plant are poisonous if ingested

Bloom Time
Red

Foliage
Late Winter/Early Spring
Mid Spring

Other details
Evergreen
Smooth
Textured

Seed Collecting

Category
From semi-hardwood cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost

Patent Information

Foliage Color
Allow pods to dry on plant; break open to collect seeds

Bloom Characteristics

Water Requirements

Where to Grow