Last frost in Aosta: likely and cautious dates
Reference dates for frost risk in Aosta.
Last frost in Aosta
This page summarizes the historical frost dates that are most useful for deciding when to sow and transplant in Aosta.
Reference dates
| indicator | date |
|---|---|
| Median last frost 0C | May 15 |
| Cautious last frost 0C | May 24 |
| Median last frost 2C | May 30 |
| Cautious last frost 2C | June 17 |
| Cautious first autumn frost 0C | September 14 |
| Cautious first autumn frost 2C | September 2 |
Difference between 0C and 2C
What to sow before the cautious date
- Swiss chard
- Carrot
- Tuscan kale
- Onion
- Strawberry
- Pea
- Radish
- Arugula
- Spinach
What to sow after the cautious date
- Broccoli
- Lettuce
- Radish
- Arugula
- Sage
- Spinach
Sensitive crops
FAQ
When does the main frost risk end in Aosta?
The most cautious date on this page is June 17 on the 2C threshold. For sensitive crops, use it as the reference before moving sowing or transplanting earlier.
Why also look at the 2C threshold?
The median 0C date is May 15, while the cautious 2C date is June 17. The 2C threshold is more cautious for cold nights, inversions, and exposed spots.
Can parts of Aosta differ from this date?
No. In Aosta, exposure, elevation, wind, and soil can move real risk earlier or later than the representative municipality point.
Which crops should be protected before the cautious date in Aosta?
In the local rules, the more sensitive crops include: Basil, Swiss chard, Broccoli, Carrot, Tuscan kale, Cucumber. For these crops, the cautious date and night protection matter more.