Limestone Bittercress

Cardamine douglassii

Taxonomy

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

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
1-2 ft
Light Requirements:
Part Shade
Drought Tolerance:
High
Bloom Months:
mar, apr
Bloom Colors:
Pink
Ground Cover:
Yes

Native Range

United States: Alabama, Arkansas, Connecticut, District of Columbia, Iowa, Illinois, Indiana, Kentucky, Massachusetts, Maryland, Michigan, Minnesota, Missouri, North Carolina, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Tennessee, Virginia, Wisconsin, West Virginia, Canada: Ontario

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, moist, well-drained loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
prefers shaded woodland areas

Germination Information

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

Source: OpenAI GPT-4o