Phacelia
Phacelia tanacetifolia
In a typical UK garden, sow outside late March to mid-September, and harvest mid-May to late October.
When to sow, plant and harvest
Last frost around 20 April, first frost around 31 October.
- Sow outdoors
- late March to mid-September
- Harvest
- mid-May to late October
Growing facts
- Spacing
- 10 cm apart, rows 15 cm apart
- Square foot
- 9 per square (30 cm squares)
- Sowing depth
- 0.5 cm
- Ready in
- 45 to 60 days from sowing
- Grows to
- 60 cm
- Hardiness
- Hardy to about -7 °C
- Sun
- Full sun
- Crops for
- About 6 weeks
Growing tip
As a green manure, cut it down before it sets seed and dig it in at least four weeks before your next crop.
More flowers
Where these figures come from
Every crop in VegLog was checked against published growing advice. Dates are worked out from average frost dates, so they shift with your garden. For phacelia, we used:
Grow phacelia with VegLog
Add phacelia to a bed and VegLog reminds you when to sow, plant out and pick, timed to your own town's frost dates.
