Ontario Hawthorn

Crataegus nitidula

Native to:
Canada, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Rosaceae
Genus:
Crataegus
Species:
Crataegus nitidula
USDA Symbol:
CRNI4

Growth Characteristics

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

Keystone Species Ranking

Caterpillar Keystone:
★★★★★ Butterfly & moth species supported by this genus (NWF)

Garden & Ecology Notes

Wildlife Value:
birds, small mammals
Deer Resistant:
Yes
Fall Color:
red, orange

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
prefers sunny locations with good air circulation

Propagation & Germination

Stratification:
Warm then cold/moist stratification (double dormancy) — 120–180 days
Scarification:
Seed coat scarification required before sowing
Germination Time:
30–365 days
Notes:
Hawthorns often exhibit double dormancy and may require two seasons to germinate. Acid scarification followed by warm then cold stratification improves germination.

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