Purple Bittercress

Cardamine purpurea

Purple Bittercress

Denali National Park and Preserve (NPS Photo/Jacob W. Frank)

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Brassicaceae
Genus:
Cardamine
Species:
Cardamine purpurea

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
6 in - 1 ft
Light Requirements:
Part Shade
Drought Tolerance:
High
Bloom Months:
jun, jul, aug
Bloom Colors:
White, Pink, Purple

Native Range

United States: Alaska, Canada: Yukon

Keystone Species Ranking

Caterpillar Keystone:
★★★★★ Based on number of butterfly and moth species using this genus as host plant (Source: National Wildlife Federation)

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 shaded areas in its native range

Germination Information

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

Source: OpenAI GPT-4o