WSU Clark County Extension
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Honorable Jean Marie Rhododendron

Scientific name: Rhododendron griffithianum 'Honorable Jean Marie'
Taxonomy
Family:Ericaceae
Type:Evergreen shrubs
Native:NO
Plant Requirements
Zone:7 to 8
Sun:Full to partial sun
Moisture:Dry
Plant Characteristics
Height:5 ft
Width:6 ft
Bloom:Showy flowers
Bloom Time:May
Bloom Color:Red
Additional Characteristics
Trees


Fruit

Leaves


Bark
Wildlife value

Poisonous
Description Generally regarded as the most sun-hardy of all rhododendrons, Jean Marie Rhododendron is noted for its fantastically large trusses of deep red, trumpet shaped flowers.

  Morphology:
This evergreen shrub grows to a height and width of 5' tall, 6' wide respectively. The limbs bear elliptic shaped leathery leaves which are 8” long and 2” wide, with a noted upward fold.

The flowers are formed in trusses and appear in mid-May. They can last for up to the 2 weeks.

  Adaptation:
While this species can survive full sun it does best in partial shade. As with all rhododendrons it prefers moist, well-drained acidic soils.

  Pests:
Root rot can be avoided by planting this species on well drained soils. Root weevels don’t seem to be problem on this plant.

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For assistance, contact Dr. Charles Brun (brunc@wsu.edu), (360) 397-6060 7713
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