Rhododendron, Catawba Rhododendron, Iron Clad Rhododendron 'Boursault'

Rhododendroncatawbiense

Family
Ericaceae (er-ek-AY-see-ee)
Genus
Rhododendron (roh-do-DEN-dron)
Species
catawbiense (ka-taw-bee-EN-see)
Synonym
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
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
Regional

This plant is said to grow outdoors in the following regions:

Castro Valley, California

New Haven, Connecticut

Lawrenceville, Georgia

Chicago, Illinois

Dracut, Massachusetts

Dearborn Heights, Michigan

Kalamazoo, Michigan

Piscataway, New Jersey

Easley, South Carolina

Randolph, Vermont

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Gardener's Notes:

0
positive
1
neutral
0
negative
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R
Kalamazoo, MI | October 2009 | neutral

Nice med. purple -blue flowers. 3/24/11 update- severe leaf burn after not so harsh winter. zero flower buds set from last year.

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