How to grow phacelia
Frost-hardy · Waterleaf family
When to sow and plant
- Sow outdoors 19 April – 3 May
Based on: average for Germany, last frost 19 April, safe from 6 May
Planting calendar for your areaWhere the dates come from
The weeks come from our sources; the dates use the average frost in Germany. Enter a German postcode to get dates for your area.
- Sow outdoors: 0–2 weeks after the last frost (NC State Extension Gardener Plant Toolbox: Phacelia tanacetifolia)
Good and bad neighbours
We don’t know any sourced neighbours for this plant yet.
Crop rotation
Our sources give no separate break for this family.
- The same species should go back to the same spot after a break of 3 years at the earliest.
- Example: grown here in 2026, again from 2030.
At a glance
- Family
- Waterleaf family (Hydrophyllaceae)
- Frost
- Hardy, tolerates frost
- Life cycle
- Annual
Questions and answers
When can I sow phacelia?
Sow outdoors, average for Germany: 19 April – 3 May. Enter a German postcode above for your area, or your own frost date in the planting calendar.
How long a break do phacelia need in the same bed?
Our sources give no separate break for this family. The same species should go back to the same spot after a break of 3 years at the earliest.
Sources
Show 4 sources
Retrieved on 23 October 2026. Facts in our own words, one source per value.