Sweet potato: 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 | Plant out | Harvest |
|---|---|---|
| Northern France | 6 May – 19 May | 1 October – 31 October |
| Atlantic coast | 26 April – 9 May | 5 October – 4 November |
| Eastern France | 28 April – 11 May | 29 September – 29 October |
| Mediterranean | 25 March – 7 April | 21 October – 20 November |
| Mountains (around 1,000 m) | 31 May – 13 June | 30 August – 29 September |
Growing
- Family
- Convolvulaceae
- Latin name
- Ipomoea batatas
- Cold tolerance
- Tender (killed by frost)
- Between rows
- 80–100 cm
- In the row
- 30–40 cm
Companion planting
The level of evidence is shown for each pairing: many rest on tradition rather than on studies.
Good neighbours
No documented pairing.
Keep apart
No documented pairing.
Sources
- Gerbeaud — per-crop fiches: chou chinois, chou kale, chou-rave, rutabaga, patate douce, topinambour, gombo, haricot d'Espagne / haricots grimpants, pourpier, radis noir, chicorée/scarole, tomatillo, ail, échalote, ciboulette, ciboule, cerfeuil, sarriette
- The Old Farmer's Almanac — Planting Calendar (New York City, last frost Apr 3; cross-checked with Minneapolis, last frost Apr 30)
- Tous au potager — Distance de plantation des légumes : tableau des espacements