Holboell's Rockcress
Boechera holboellii
Also known as: Holboell's rockcress, dropseed rockcress, second rockcress
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Brassicaceae
- Genus:
- Boechera
- Species:
- Boechera holboellii
Growth Characteristics
- Life Cycle:
- Biennial | Perennial
- Growth Habit:
- Forb/herb
- Height:
- 3-4 ft
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- mar, apr, may, jun, jul, aug
- Bloom Colors:
- Purple
Native Range
United States: Alaska, Arizona, California, Colorado, Idaho, Michigan, Minnesota, Montana, North Dakota, Nebraska, New Mexico, Nevada, Oregon, South Dakota, Utah, Washington, Wyoming, Canada: Alberta, British Columbia, Manitoba, Northwest Territories, Ontario, Quebec, Saskatchewan, Yukon
Host Plant for Caterpillars
California Marble (Euchloe hyantis), Paramidea lanceolata, Spring white (Pontia sisymbrii), Western white (Pontia occidentalis)
Soil Requirements
- Soil Type:
- rocky, well-drained, nutrient-poor soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- commonly found in rocky outcrops and slopes
Germination Information
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).
Source: OpenAI GPT-4o