Northern Primrose
Primula borealis
- Native to:
- Canada, Russia, United States
Валерия Ковалева
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Primulaceae
- Genus:
- Primula
- Species:
- Primula borealis
- USDA Symbol:
- PRBO
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 20 cm
- Light Requirements:
- Part Shade
- Drought Tolerance:
- Low
- Bloom Months:
- may,jun,jul
- Bloom Colors:
- pink, lavender, white
Wildlife Benefits
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
Garden & Ecology Notes
- Wildlife Value:
- butterflies
- Deer Resistant:
- Yes
- Salt Tolerant:
- Yes
Soil Requirements
- Soil Type:
- moist, well-drained loamy soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- good drainage required
- Moisture:
- consistently moist
- Notes:
- prefers cool, shaded environments
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–90 days
- Germination Time:
- 14–42 days
- Notes:
- Requires light for germination; surface sow and do not cover seed. Cool temperatures preferred.
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.
Notes: Seeds require light for germination; do not cover.
Source: Claude AI
ORGHPS Germination Guide: Expose to fluctuation outdoor winter temperatures including freezing for 3 months. Gradually increase light and temperature in the spring. * most interbreed and seed may not be what is labelled, germinate best in cool, moist conditions; for sturdy seedlings grow outdoors in spring, prick out