May in Bolzano
What to plant in May in Bolzano
Direct sowing, recommended transplants, and average climate risks for a vegetable garden in Bolzano in May.
Operational summary
Crop actions
| Action | Crops | Success probability |
|---|---|---|
| Direct sowing1 crop | Onion | High80% |
| Start indoors0 crops | - | - |
| Transplants1 crop | Onion | High80% |
| Wait3 crops | Radish, Arugula, Spinach | Low53% |
Direct sowing (1)
Start indoors (0)
- -
Transplants (1)
Wait (3)
Crops for this month
| Action | Crops | Success probability |
|---|---|---|
| Direct sowing1 crop | Onionwindow: from May 30 to May 31harvest: from August 27 to August 28 | High80% |
| Start indoors0 crops | - | - |
| Transplants1 crop | Onionwindow: from May 30 to May 31harvest: from August 27 to August 28 | High80% |
| Wait3 crops | Low53% |
Direct sowing (1)
Start indoors (0)
- -
Transplants (1)
Wait (3)
Local climate
Altitude and microclimates
- Altitude range
- 228-1626 m a.s.l.
- Total altitude difference
- 1398 m
- Standard deviation
- 373.53 m
- Main altitude bands
- <300 m (48.21%), 300-599 m (21.54%)
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.
Method and limits
Which crop has the clearest window in May in Bolzano?
Start with Onion for direct sowing during from May 30 to May 31. The estimated harvest is from August 27 to August 28 and the best estimated success rate is 80%.
What limits May most in Bolzano?
Check night temperatures: with an average minimum of 2.56 °C, germination and sensitive transplants can slow down. Check drainage and standing water: average rain is 92.18 mm. Monthly averages: minimum 2.56 °C, maximum 13.61 °C, rain 92.18 mm, and dry spell 5.23 days.
Why wait on Radish in May?
The available Radish window is May 31 and remains classified as risky. The best estimated success rate is 53%; before starting, check: overall climate risk is moderate.
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




