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Catawba Rhododendron, Iron Clad Rhododendron
Rhododendron catawbiense 'Boursault'

Family: Ericaceae (er-ek-AY-see-ee) (Info)
Genus: Rhododendron (roh-do-DEN-dron) (Info)
Species: catawbiense (ka-taw-bee-EN-see) (Info)
Cultivar: Boursault
» View all varieties of Azaleas and Rhododendrons

Category:

Shrubs

Height:

10-12 ft. (3-3.6 m)

12-15 ft. (3.6-4.7 m)

Spacing:

8-10 ft. (2.4-3 m)

Hardiness:

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)

Sun Exposure:

Sun to Partial Shade

Light Shade

Danger:

All parts of plant are poisonous if ingested

Bloom Color:

Rose/Mauve

Bloom Time:

Late Spring/Early Summer

Foliage:

Grown for foliage

Evergreen

Smooth-Textured

Other details:

This plant is attractive to bees, butterflies and/or birds

Average Water Needs; Water regularly; do not overwater

Provides winter interest

Patent Information:

Unknown - Tell us

Seed Collecting:

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

Regional

This plant has been said to grow in the following regions:

Castro Valley, California

New Haven, Connecticut

Lawrenceville, Georgia

Chicago, Illinois

Dracut, Massachusetts

Dearborn Heights, Michigan

Kalamazoo, Michigan

Piscataway, New Jersey

Randolph, Vermont

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Gardeners' Notes:

0
positives
1
neutral
0
negatives
RatingContent
Neutral

On Oct 5, 2009, roalber from Kalamazoo, MI wrote:

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