Fernleaf Phacelia
Phacelia bipinnatifida — Borage Family
A native biennial wildflower in the Borage Family that blooms in spring well-suited to shaded woodland gardens.
Planting Guide
When to plant
Sow seed in late spring or early summer of one year; plants bloom the following spring.
Spacing
Space plants 1.1–1.5 feet apart. Closer spacing fills in faster and suppresses weeds; wider spacing gives each plant room to reach full size.
Root system
Roots reach at least 6 inches deep at maturity. Plant the crown at or just below soil level.
Growing Conditions
Sunlight
Part shade to full shade — as little as 2 hours of direct sunlight. This species is well suited to woodland gardens, north-facing slopes, and the shade of mature trees.
Soil & pH
Prefers a wide pH range from acidic to neutral (pH 5.5–7.0). Most average garden soils fall in this range; a quick soil test confirms your starting point.
Watering
Moderate water needs. Water deeply once or twice per week during the first season. Established plants handle brief dry spells but benefit from occasional watering during prolonged dry periods. Once established (typically 1–2 seasons), it shows moderate drought tolerance and can go extended periods without supplemental water.
Seasonal Care
- Deadhead spent flowers regularly to extend bloom period and prevent excessive self-seeding.
- Water during extended dry periods (10+ days without rain), especially in the first season.
- No active care required. Check if self-sown seedlings appear in early spring.
Wildlife & Garden Value
Ecological benefits
- Early bloomer — provides critical nectar and pollen at a time when little else is flowering, supporting queen bumblebees and other early-emerging pollinators.
Landscaping uses
- Groundcover or front-of-border plant. Low stature works well along pathways and lawn edges.
Where to Buy Fernleaf Phacelia
Buy from specialist native plant nurseries to get the true species rather than a cultivar with reduced wildlife value.
- American Meadows — native seeds and plants
- Prairie Moon Nursery — specialist native plant nursery
- Burpee — seeds with planting instructions