Cross Mountain Rockcress

Boechera williamsii

Also known as: Wind River rockcress

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Brassicaceae
Genus:
Boechera
Species:
Boechera williamsii

Growth Characteristics

Life Cycle:
Biennial | Perennial
Growth Habit:
Forb/herb
Height:
6 in - 1 ft
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
may, jun
Bloom Colors:
White
Ground Cover:
Yes

Native Range

United States: Idaho, Montana, Wyoming

Soil Requirements

Soil Type:
rocky, well-drained, sandy soil
pH:
6.0 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
native to rocky slopes and open areas

Germination Information

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

Source: OpenAI GPT-4o