May in Terni
What to plant in May in Terni
Direct sowing, recommended transplants, and average climate risks for a vegetable garden in Terni in May.
Operational summary
Crop actions
| Action | Crops | Success probability |
|---|---|---|
| Direct sowing12 crops | Swiss chard, Carrot, Tuscan kale, Onion, Fennel, Lettuce, Potato, Pea, Parsley, Radish, Arugula, Spinach | High97.25% |
| Start indoors14 crops | Broccoli, Tuscan kale, Cucumber, Onion, Fennel, Strawberry, Lettuce, Eggplant, Pepper, Tomato, Rosemary, Sage, Pumpkin, Zucchini | High80% |
| Transplants8 crops | Broccoli, Tuscan kale, Onion, Fennel, Strawberry, Lettuce, Rosemary, Sage | High93.38% |
| Wait1 crop | Green bean | Low50% |
Direct sowing (12)
Swiss chardwindow: from May 1 to May 31harvest: from June 19 to July 19›
Carrotwindow: from May 1 to May 31harvest: from June 29 to July 29›
Tuscan kalewindow: from May 1 to May 31harvest: from June 24 to July 24›
Onionwindow: from May 1 to May 31harvest: from July 29 to August 28›
Fennelwindow: from May 1 to May 31harvest: from June 29 to July 29›
Lettucewindow: from May 1 to May 31harvest: from June 4 to July 4›
Potatowindow: from May 1 to May 31harvest: from July 29 to August 28›
Peawindow: from May 1 to May 31harvest: from June 24 to July 24›
Start indoors (14)
Broccolistart indoors: March 9harvest: from June 18 to November 8›
Tuscan kalestart indoors: March 5harvest: from June 2 to November 18›
Cucumberstart indoors: May 25harvest: from August 3 to October 14›
Onionstart indoors: January 6harvest: from June 20 to November 24›
Fennelstart indoors: March 23harvest: from June 25 to November 8›
Strawberrystart indoors: March 16harvest: from June 11 to November 18›
Lettucestart indoors: March 23harvest: from May 24 to November 8›
Eggplantstart indoors: May 1harvest: from September 3 to October 14›
Transplants (8)
Broccoliwindow: from May 1 to May 31harvest: from June 29 to July 29›
Tuscan kalewindow: from May 1 to May 31harvest: from June 24 to July 24›
Onionwindow: from May 1 to May 31harvest: from July 29 to August 28›
Fennelwindow: from May 1 to May 31harvest: from June 29 to July 29›
Strawberrywindow: from May 1 to May 31harvest: from June 29 to July 29›
Lettucewindow: from May 1 to May 31harvest: from June 4 to July 4›
Rosemarywindow: from May 17 to May 31harvest: from July 15 to July 29›
Sagewindow: from May 1 to May 31harvest: from June 29 to July 29›
Wait (1)
Crops for this month
| Action | Crops | Success probability |
|---|---|---|
| Direct sowing12 crops | Swiss chardwindow: from May 1 to May 31harvest: from June 19 to July 19Carrotwindow: from May 1 to May 31harvest: from June 29 to July 29Tuscan kalewindow: from May 1 to May 31harvest: from June 24 to July 24Onionwindow: from May 1 to May 31harvest: from July 29 to August 28Fennelwindow: from May 1 to May 31harvest: from June 29 to July 29Lettucewindow: from May 1 to May 31harvest: from June 4 to July 4Potatowindow: from May 1 to May 31harvest: from July 29 to August 28Peawindow: from May 1 to May 31harvest: from June 24 to July 24Parsleywindow: from May 1 to May 31harvest: from July 19 to August 18Radishwindow: from May 1 to May 31harvest: from May 25 to June 24Arugulawindow: from May 1 to May 31harvest: from May 25 to June 24Spinachwindow: from May 1 to May 31harvest: from June 4 to July 4 | High97.25% |
| Start indoors14 crops | Broccolistart indoors: March 9harvest: from June 18 to November 8Tuscan kalestart indoors: March 5harvest: from June 2 to November 18Cucumberstart indoors: May 25harvest: from August 3 to October 14Onionstart indoors: January 6harvest: from June 20 to November 24Fennelstart indoors: March 23harvest: from June 25 to November 8Strawberrystart indoors: March 16harvest: from June 11 to November 18Lettucestart indoors: March 23harvest: from May 24 to November 8Eggplantstart indoors: May 1harvest: from September 3 to October 14Pepperstart indoors: April 30harvest: from August 28 to October 20Tomatostart indoors: May 4harvest: from August 23 to October 27Rosemarystart indoors: April 5harvest: from July 15 to November 8Sagestart indoors: March 13harvest: from June 22 to November 8Pumpkinstart indoors: May 25harvest: from September 12 to November 2Zucchinistart indoors: May 25harvest: from July 29 to October 10 | High80% |
| Transplants8 crops | Broccoliwindow: from May 1 to May 31harvest: from June 29 to July 29Tuscan kalewindow: from May 1 to May 31harvest: from June 24 to July 24Onionwindow: from May 1 to May 31harvest: from July 29 to August 28Fennelwindow: from May 1 to May 31harvest: from June 29 to July 29Strawberrywindow: from May 1 to May 31harvest: from June 29 to July 29Lettucewindow: from May 1 to May 31harvest: from June 4 to July 4Rosemarywindow: from May 17 to May 31harvest: from July 15 to July 29Sagewindow: from May 1 to May 31harvest: from June 29 to July 29 | High93.38% |
| Wait1 crop | Green beanwindow: from May 21 to May 31harvest: from July 9 to July 19 | Low50% |
Direct sowing (12)
Swiss chardwindow: from May 1 to May 31harvest: from June 19 to July 19›
Carrotwindow: from May 1 to May 31harvest: from June 29 to July 29›
Tuscan kalewindow: from May 1 to May 31harvest: from June 24 to July 24›
Onionwindow: from May 1 to May 31harvest: from July 29 to August 28›
Fennelwindow: from May 1 to May 31harvest: from June 29 to July 29›
Lettucewindow: from May 1 to May 31harvest: from June 4 to July 4›
Potatowindow: from May 1 to May 31harvest: from July 29 to August 28›
Peawindow: from May 1 to May 31harvest: from June 24 to July 24›
Start indoors (14)
Broccolistart indoors: March 9harvest: from June 18 to November 8›
Tuscan kalestart indoors: March 5harvest: from June 2 to November 18›
Cucumberstart indoors: May 25harvest: from August 3 to October 14›
Onionstart indoors: January 6harvest: from June 20 to November 24›
Fennelstart indoors: March 23harvest: from June 25 to November 8›
Strawberrystart indoors: March 16harvest: from June 11 to November 18›
Lettucestart indoors: March 23harvest: from May 24 to November 8›
Eggplantstart indoors: May 1harvest: from September 3 to October 14›
Transplants (8)
Broccoliwindow: from May 1 to May 31harvest: from June 29 to July 29›
Tuscan kalewindow: from May 1 to May 31harvest: from June 24 to July 24›
Onionwindow: from May 1 to May 31harvest: from July 29 to August 28›
Fennelwindow: from May 1 to May 31harvest: from June 29 to July 29›
Strawberrywindow: from May 1 to May 31harvest: from June 29 to July 29›
Lettucewindow: from May 1 to May 31harvest: from June 4 to July 4›
Rosemarywindow: from May 17 to May 31harvest: from July 15 to July 29›
Sagewindow: from May 1 to May 31harvest: from June 29 to July 29›
Wait (1)
Local climate
Altitude and microclimates
- Altitude range
- 96-1114 m a.s.l.
- Total altitude difference
- 1018 m
- Standard deviation
- 236.67 m
- Main altitude bands
- <300 m (39.57%), 300-599 m (37.6%)
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 recommendation stands out for Terni in May?
Start with Swiss chard for direct sowing during from May 1 to May 31. The estimated harvest is from June 19 to July 19 and the best estimated success rate is 100%.
Which crop can be started indoors in May?
For Broccoli, the useful indoor seed period is from March 9 to July 30. The expected transplanting window is from April 20 to September 10 and it is best to start seedlings 42 days earlier.
What limits May most in Terni?
Check irrigation and soil moisture: the average dry spell reaches 10.17 days, even with average rain of 60.41 mm. Monthly averages: minimum 10.41 °C, maximum 22.79 °C, rain 60.41 mm, and dry spell 10.17 days.
What makes Green bean cautious this month?
The available Green bean window is from May 21 to May 31 and remains classified as risky. The best estimated success rate is 50%; 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

