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Scientific Name:
Philadelphus lewisii
Pronunciation:
fill-uh-DEL-fus LOO-iss-ee-eye
Common Name:
Lewis mock orange
Family Name:
Hydrangeaceae
Plant Type:
Shrub - deciduous
Key ID Features:
Leaves opposite, larger blades usually less than 6 x 3cm, broadly lanceolate to broadly ovate, or narrowly to broadly elliptic, margins entire or irregularly to regularly serrate, crenate, or dentate; inflorescences not very fragrant, usually cymose racemes or cymose panicles each with (1-)5-11 florets, 3-4.5cm wide, pedicels 3–8mm long; petals white, 5-20(-25) x 4-15mm; stamens 25-40(-50), filaments distinct, 5-11mm long; anthers 2 x 1.5mm. Winter ID: fruit small brown capsules split in 4, persist in winter; leaf scar heart-shaped, non-descript bundle scars.

Habit:
Stiffly upright
Form:
Oval - vertical
Texture:
Medium - fine
Mature Height:
2 - 3m
Mature Spread:
1.5 - 2.0m
Growth Rate:
Moderate
Origin:
B.C. west of Cascades, U.S. - northwest (Naturalized In BC)
Hardiness Rating:
Zone 5: (-29 to -23 °C)
Exposure:
Full sun, Part sun/part shade
Soil/Growing Medium:
Acidic, Well-drained
Water Use:
Moderate
Landscape Uses:
Fragrance, Mixed shrub border, Small garden/space, Specimen plant, Woodland margin
Additional Info:

Leaf Morphology:
Form:
Simple
Arrangement:
Opposite
Texture/Venation:
Heavily veined
Surfaces:
Tomentose
Colour in Fall:
Yellow
Shapes:
Elliptic, Ovate
Apices:
Acuminate, Acute
Bases:
Obtuse
Margins:
Entire, Serrulate
Additional Info:
Leaves may be finely toothed.

Inflorescence Type:
Raceme
Flower Morphology:
Flowers perfect
Number Of Petals:
4
Corolla Shape:
Cruciform
Ovary Position:
Inferior
Colour (petals):
Showy, White
Flower Scent:
None, Sweet
Flower Time at Peak:
May, Jun

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

Bark Morphology:
Lightly fissured, Multi-stem trunk
Bark or Stem Colour:
Grey, Tan, Brown
Leaf Bud Type:
Rounded or globular
Leaf Scar Shape:
Round
Propagation:
Seed, Softwood cuttings, Hardwood cuttings
Maintenance:
Low
Pest Susceptibility:
(Pest resistant, Disease resistant, Rabbit resistant, Drought tolerant)

Course(s):
  • HORT 2355
Location(s):
  • (GAZ)  GAZebo
  • (GAZE)  GAZebo East : q.2
  • (ONE)  Overpass North side East
Location Map