Tomato
- Start seedlings
- 17.02.2027
Tomatoes and cucumbers in an unheated greenhouse
Unheated greenhouse timing for tomatoes and cucumbers by Estonian climate region, plus frost and heat thresholds and a live next-7-days risk read from MET Norway when available.
Tallinn ja Harjumaa — jahedam kevad, hilisem soojalaine. Võrreldes lõunaga jäävad külmavabad ööd ja sooja mulla aknad tihti hiljemaks.
Frost and heat thresholds
- ≤ 2.0 °C night frost risk — cover, close vents, delay planting.
- < 8.0 °C nights too cool for reliable tomato/cucumber planting.
- ≥ 30.0 °C day heat — vent, shade, water early.
When to plant by region
Cucumber
- Start seedlings
- 17.04.2027
- Into unheated greenhouse
- 27.05.2027
The (climate twin) mark means the date comes from a climate twin: a region abroad with a comparable growing climate (e.g. Minnesota/US), because Estonian-sourced data for that crop is not available yet. Treat it as a guide and check it against local experience. Estonian-sourced dates have no mark.
Next 7 days — greenhouse risk
Greenhouse risks for the next 7 days below — based on the MET Norway forecast.
- Cool night on 21 Oct (~4.9 °C): hold tomato/cucumber planting until nights hold above 8 °C.
- Cool night on 22 Oct (~6.2 °C): hold tomato/cucumber planting until nights hold above 8 °C.
- Cool night on 23 Oct (~6.3 °C): hold tomato/cucumber planting until nights hold above 8 °C.
- Cool night on 24 Oct (~7.9 °C): hold tomato/cucumber planting until nights hold above 8 °C.
- Cool night on 25 Oct (~7.3 °C): hold tomato/cucumber planting until nights hold above 8 °C.
| Day | Min °C | Max °C | Flag |
|---|---|---|---|
| 21.10 | 4.9 | 12.5 | cool |
| 22.10 | 6.2 | 12.2 | cool |
| 23.10 | 6.3 | 12.4 | cool |
| 24.10 | 7.9 | 12.3 | cool |
| 25.10 | 7.3 | 11.9 | cool |
| 26.10 | 9.2 | 11.9 | ok |
| 27.10 | 8.1 | 10.7 | ok |