Heartleaf Mock Orange

Philadelphus lewisii

Native to:
Canada

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Hydrangeaceae
Genus:
Philadelphus
Species:
Philadelphus lewisii
USDA Symbol:
PHCO32

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub
Height:
300 cm
Light Requirements:
Full Sun,Part Shade
Drought Tolerance:
High
Bloom Months:
may,jun,jul
Bloom Colors:
white
Landscaping Shrub:
Yes

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)

Host Plant for Caterpillars

Johnson's euchlaena moth (Euchlaena johnsonaria), short-lined angle (Anacamptodes clivinaria)

Reported Fauna Sightings

Butterflies:Western Tiger Swallowtail (Papilio rutulus)

Garden & Ecology Notes

Wildlife Value:
bees, butterflies, birds
Deer Resistant:
Yes
Fragrant:
Yes
Fall Color:
yellow
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts vigorously from root crown following fire. Common in fire-prone habitats.

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
14–42 days
Notes:
Seeds require light for germination. Surface sow and keep moist.

The above propagation data sourced from Claude AI