Streambank Mock Orange

Philadelphus hirsutus

Also known as: Sharp's Mock Orange

Native to:
United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Hydrangeaceae
Genus:
Philadelphus
Species:
Philadelphus hirsutus
USDA Symbol:
PHHI2

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub
Height:
300 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
apr,may,jun
Bloom Colors:
white, cream
Landscaping Shrub:
Yes

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)

Garden & Ecology Notes

Wildlife Value:
birds, bees
Deer Resistant:
Yes
Fragrant:
Yes
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts from root crown following fire or mechanical damage.

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
consistently moist
Notes:
Prefers sheltered locations with partial shade

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
14–42 days
Notes:
Seeds require light for germination; surface sow and do not cover.

The above propagation data sourced from Claude AI

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 60 days.

Source: Claude AI