Borage: when to sow, plant out and harvest
Sowing, planting and harvest dates for your climate, good and bad companions, growing tips.
When to sow in your region
Average dates, computed from the frost dates of each climate. For your exact dates, choose your town.
| Climate | Sow under cover | Sow outdoors | Plant out |
|---|---|---|---|
| Northern France | 4 March – 24 March | 22 April – 5 May | 22 April – 5 May |
| Atlantic coast | 22 February – 14 March | 12 April – 25 April | 12 April – 25 April |
| Eastern France | 24 February – 16 March | 14 April – 27 April | 14 April – 27 April |
| Mediterranean | 21 January – 10 February | 11 March – 24 March | 11 March – 24 March |
| Mountains (around 1,000 m) | 29 March – 18 April | 17 May – 30 May | 17 May – 30 May |
Growing
- Family
- Boraginaceae
- Latin name
- Borago officinalis
- Cold tolerance
- Half-hardy (dislikes hard frost)
- Soil temperature to germinate
- 16 °C minimum
- Between rows
- 45–60 cm
- In the row
- 45–60 cm
Companion planting
The level of evidence is shown for each pairing: many rest on tradition rather than on studies.
Good neighbours
- French bean (bush or climbing)Tradition
- TomatoTradition
- Winter squash and pumpkinTradition
Keep apart
No documented pairing.