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, 8-20cm long x 3-7cm wide, petioles 1-2cm long; flowers 2.5-4cm long x up to 5cm wide; corolla deeply 5-lobed, stamens 10, anthers 2-3mm long, red-brown.
Habit:
Dense, Spreading, Upright
Form:
Oval - vertical
Texture:
Coarse
Mature Height:
7 - 10m
Mature Spread:
4 - 5m
Growth Rate:
Slow
Origin:
B.C. west of Cascades, U.S. - northwest
Hardiness Rating:
Zone 6: (-23 to -18 °C)
Exposure:
Part sun/part shade, Filtered shade, Deep 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:
Leaf Morphology:
Form:
Simple
Arrangement:
Alternate
Texture/Venation:
Leathery
Surfaces:
Glabrous
Colour in Fall:
Green
Shapes:
Elliptic
Apices:
Acute
Bases:
Obtuse
Margins:
Entire
Additional Info:
Leaves may appear whorled near stem tips
Inflorescence Type:
Raceme, Floriferous
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
Maintenance:
Low
Pest Susceptibility:
Beetles or weevils (Deer resistant, Drought tolerant)
