Scientific Name:
Rhododendron
'PJM'
Pronunciation:
roe-doe-DEN-drun
Common Name:
PJM rhododendron
Family Name:
Ericaceae
Plant Type:
Broadleaf evergreen
Key ID Features:
Leaves small, elliptic, most blades 4-6cmlong x 2-3cm wide, leathery, dark green/rough rusty-scaly underside, aromatic when crushed, petioles 5-12mm long; flower lavender-pink in spring. Winter ID: leaves purple-bronze.
Habit:
Dense
Form:
Round
Texture:
Medium - fine
Mature Height:
0.7 - 1.3m
Mature Spread:
1.0 - 1.5m
Growth Rate:
Slow
Origin:
Garden origin, North America (R. carolinianum x R. dauricum var. sempervirens)
Hardiness Rating:
Zone 4: (-34 to -29 °C)
Exposure:
Full sun, Part sun/part shade
Soil/Growing Medium:
Acidic, Well-drained
Water Use:
Moderate
Landscape Uses:
Mixed shrub border, Spring interest
Additional Info:
Google. PJM represents group of hybrids so expect some variability.
Leaf Morphology:
Form:
Simple
Arrangement:
Alternate
Texture/Venation:
Leathery, Pinnate venation
Surfaces:
Glabrous
Colour in Fall:
Brown
Shapes:
Elliptic
Apices:
Obtuse
Bases:
Obtuse
Margins:
Entire
Inflorescence Type:
Raceme
Flower Morphology:
Flowers perfect
Number Of Petals:
5
Corolla Shape:
Funnelform
Ovary Position:
Superior
Colour (petals):
Showy, Violet, Pink
Flower Scent:
None
Flower Time at Peak:
Mar, Apr, May
Fruit Type:
Aborted (hybrids) or absent
Fruit Colour:
Fruiting Time:
Additional Info:
Fruit insignificant
Bark or Stem Colour:
Brown
Leaf Bud Type:
Striate scales
Propagation:
Cuttings
Maintenance:
Low
Pest Susceptibility:
Galls, Root rot, Rust, Scale insects
Course(s):
- HORT 1155
Location(s):
- (ONE) Overpass North side East : 712
- (ONW) Overpass North side West