March in Aosta
What to plant in March in Aosta
Direct sowing, recommended transplants, and average climate risks for a vegetable garden in Aosta in March.
Operational summary
Crop actions
| Action | Crops | Success probability |
|---|---|---|
| Direct sowing0 crops | - | - |
| Start indoors1 crop | Onion | High80% |
| Transplants0 crops | - | - |
| Wait0 crops | - | - |
Direct sowing (0)
- -
Start indoors (1)
Transplants (0)
- -
Wait (0)
- -
Crops for this month
| Action | Crops | Success probability |
|---|---|---|
| Direct sowing0 crops | - | - |
| Start indoors1 crop | Onionstart indoors: March 2harvest: from August 15 to October 6 | High80% |
| Transplants0 crops | - | - |
| Wait0 crops | - | - |
Direct sowing (0)
- -
Start indoors (1)
Transplants (0)
- -
Wait (0)
- -
Local climate
Altitude and microclimates
- Altitude range
- 548-2586 m a.s.l.
- Total altitude difference
- 2038 m
- Standard deviation
- 486.76 m
- Main altitude bands
- 600-899 m (28.75%), 300-599 m (25.88%)
In a municipality with this much terrain variation, frost, soil warming, and heat stress can differ between valley or lowland gardens and higher hamlets. Use this month's windows as an average guide and adjust sowing and transplanting to the garden's actual altitude.
- cold risk for sensitive sowing
Method and limits
Which crop can be started indoors in March?
For Onion, the useful indoor seed period is from March 2 to April 23. The expected transplanting window is from May 18 to July 9 and it is best to start seedlings 77 days earlier.
What should I watch in March in Aosta?
Check night minimums and frost risk: with an average minimum of -4.17 °C, sensitive sowings and transplants need protection. Check irrigation and soil moisture: the average dry spell reaches 11.6 days, even with average rain of 51.87 mm. Monthly averages: minimum -4.17 °C, maximum 5.19 °C, rain 51.87 mm, and dry spell 11.6 days.
Sources and limits
Use these dates as practical guidance, not fixed deadlines. Exposure, soil, containers, irrigation, and the next few days' forecast can move the right timing earlier or later.
- Municipality registry: ISTAT
- Municipal altimetry and altitude bands: ISTAT geographic statistics for municipalities 2021
- Local historical climate: NASA POWER Daily API
- Representative weather point: GeoNames
- Crop needs: OrtoClima
- Last data update: June 21, 2026

