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Cornell University

Species: Rhododendron maximum

(ro-do-den'dron maks'i-mum)

Rhododendron maximum

Rosebay Rhododendron

Found on Course Walks

Broad-leaved Evergreens

Map of plant locations

(Plant location data may be incomplete)

In Collection(s):

None Listed

Ornamental Characteristics

Shrub > 8 feet

15' - 20' (equal spread)

Evergreen

massive rounded shrub; loose and open

Broadleaf evergreen; large leaves; pink buds open to white flowers in June.

Environmental Characteristics

Part shade, Shade

3b

Requires acid (pH 5.0 to 7.0)

Cold hardy, needs shade and excellent drainage.

Consistently moist, well-drained soil; Occasional periods of dry soil
See graphic below

Insect Disease

most not serious except leaf scorch

Bare Root Transplanting


Other

Native from Georgia through Nova Scotia in understory of hilly areas.

Native Range Map

Native Range Map Image

Moisture Tolerance Graphic

Please view this page on a tablet or larger screen for the moisture graph

Moisture Tolerance

Moisture graphic
Occasionally saturated or very wet soil
Consistently moist, well-drained soil
Occasional periods of dry soil
Prolonged periods of dry soil
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