Details of...
Scientific Name: Rhododendron macrophyllum
Pronunciation: roe-doe-DEN-drun mack-roe-FILL-um
Common Name: Pacific rhododendron
Family Name: Ericaceae
Plant Type: Broadleaf evergreen
Key ID Features: Leaves, leathery, mostly elliptic, 8-20 cm long x 3-7 cm wide, petioles 1-2 cm long; flowers 2.5-4 cm long x up to 5 cm wide; corolla deeply 5-lobed, stamens 10, anthers 2-3 mm long, red-brown.
Course(s): AARB 1012, HORT 1155

Habit: Dense, Spreading, Upright
Form: Oval - vertical
Texture: Coarse
Mature Size:
Height:7 - 10m
Spread:4 - 5m
Growth Rate:Slow
Origin: B.C. west of Cascades, U.S. - northwest
Hardiness Rating: Zone 6: (-23 to -18 C)
Exposure: Deep shade, Filtered shade, Part sun/part shade
Soil/ Growing Medium: Humus rich, Well-drained
Water Use: Low
Landscape Uses: Group or mass planting, Mixed shrub border, Screening, Specimen plant, Tall background, Woodland margin
Additional Info: Google
Pacific rhododendron
Leaf Morphology: Glossary
Form: Simple
Arrangement: Alternate
Texture/ Venation: Leathery
Surfaces: Glabrous
Colour in Fall: Green
Leaf(let) Terms:
Shapes: Elliptic
Apices: Acute
Bases: Obtuse
Margins: Entire
Additional Info: Leaves may appear whorled near stem tips

Inflorescence Type: Floriferous, Raceme
Flower Morphology:Flowers perfect
Number of Petals:5
Corolla Shape:Campanulate
Ovary Position:Superior
Colour (petals): Showy, White, Pink
Flower Scent: None
Flower Time at Peak: May

Fruit Type: Capsule
Fruit Colour: Brown
Fruiting Time: Aug, Sep
Additional Info: Not showy

Bark or Stem Colour:
Leaf Bud Type: Striate scales Outer scale centered directly over leaf scar)
Leaf Scar Shape:Crescent shaped
Organ Modifications: Fibrous-like roots

Propagation: Seed, Softwood cuttings, Layering
Plant Care:
Pest Susceptibility: Beetles or weevils, ( Deer resistant, Drought resistant )
(HPZ) Horticulture PlaZa : cv.?
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