Rhododendron Species, Wild, Rosebay Rhododendron, Great White Laurel

Rhododendronmaximum

Family
Ericaceae (er-ek-AY-see-ee)
Genus
Rhododendron (roh-do-DEN-dron)
Species
maximum (MAKS-ih-mum)
Synonym
Spacing
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)
15-20 ft. (4.7-6 m)
20-30 ft. (6-9 m)
Hardiness
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)
Sun Exposure
USDA Zone 3b: to -37.2 °C (-35 °F)
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
Light Shade
Bloom Color
Parts of plant are poisonous if ingested
Bloom Time
Pink
White/Near White
Foliage
Late Spring/Early Summer
Mid Summer
Other Details
Other details
Evergreen
Seed Collecting
Category
From softwood cuttings
From semi-hardwood cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
By simple layering
By air layering
By stooling or mound layering
Patent Information
Foliage Color
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored
Bloom Characteristics
Water Requirements
Where to Grow
Regional

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

Pelham, Alabama

Winterthur, Delaware

Helen, Georgia

Slade, Kentucky

Oakland, Maryland

Halifax, Massachusetts

Bryn Mawr, Pennsylvania

Emporium, Pennsylvania

Greencastle, Pennsylvania

Lititz, Pennsylvania

West Chester, Pennsylvania

Providence, Rhode Island

Quitzdorf am See, Sachsen

Christiana, Tennessee

Blacksburg, Virginia

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Gardener's Notes:

3
positives
1
neutral
0
negative
Sort By:
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S
Lititz, PA (Zone 6b) | May 2015 | neutral

I planted mine in spring of '11 and it has grown about 2' since. A second one was planted 6' away a year later and suffered death likely...Read More

R
Downingtown, PA | December 2013 | positive

Rosebay Rhododendron is occasionally sold in many larger nurseries in southeast Pennsylvania and some native plant nurseries. I have occa...Read More

H
Fayetteville, PA (Zone 6b) | June 2012 | positive

This plant is native to the Eastern US, and is found growing as an understory plant in oak and hemlock forests... Any woods where the soi...Read More

P
Central, AL (Zone 8a) | August 2008 | positive

Will bloom in partial shade.

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