April in Viterbo
What to plant in April in Viterbo
Direct sowing, recommended transplants, and average climate risks for a vegetable garden in Viterbo in April.
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 | High81.08% |
| Start indoors10 crops | Broccoli, Tuscan kale, Fennel, Strawberry, Lettuce, Eggplant, Pepper, Tomato, Rosemary, Sage | High80% |
| Transplants7 crops | Broccoli, Tuscan kale, Onion, Fennel, Strawberry, Lettuce, Sage | High81.86% |
| Wait0 crops | - | - |
Direct sowing (12)
Swiss chardwindow: from April 9 to April 30harvest: from May 28 to June 18›
Carrotwindow: from April 9 to April 30harvest: from June 7 to June 28›
Tuscan kalewindow: from April 2 to April 30harvest: from May 26 to June 23›
Onionwindow: from April 1 to April 30harvest: from June 29 to July 28›
Fennelwindow: from April 23 to April 30harvest: from June 21 to June 28›
Lettucewindow: from April 10 to April 30harvest: from May 14 to June 3›
Potatowindow: from April 11 to April 30harvest: from July 9 to July 28›
Peawindow: from April 2 to April 30harvest: from May 26 to June 23›
Start indoors (10)
Broccolistart indoors: February 28harvest: from June 8 to November 9›
Tuscan kalestart indoors: February 27harvest: from May 26 to November 19›
Fennelstart indoors: March 19harvest: from June 21 to November 9›
Strawberrystart indoors: March 6harvest: from June 1 to November 19›
Lettucestart indoors: March 13harvest: from May 14 to November 9›
Eggplantstart indoors: April 26harvest: from August 29 to October 16›
Pepperstart indoors: April 20harvest: from August 18 to October 22›
Tomatostart indoors: April 23harvest: from August 12 to October 29›
Transplants (7)
Broccoliwindow: from April 10 to April 30harvest: from June 8 to June 28›
Tuscan kalewindow: from April 2 to April 30harvest: from May 26 to June 23›
Onionwindow: from April 1 to April 30harvest: from June 29 to July 28›
Fennelwindow: from April 23 to April 30harvest: from June 21 to June 28›
Strawberrywindow: April 3harvest: June 1›
Lettucewindow: from April 10 to April 30harvest: from May 14 to June 3›
Sagewindow: from April 21 to April 30harvest: from June 19 to June 28›
Wait (0)
- -
Crops for this month
| Action | Crops | Success probability |
|---|---|---|
| Direct sowing12 crops | Swiss chardwindow: from April 9 to April 30harvest: from May 28 to June 18Carrotwindow: from April 9 to April 30harvest: from June 7 to June 28Tuscan kalewindow: from April 2 to April 30harvest: from May 26 to June 23Onionwindow: from April 1 to April 30harvest: from June 29 to July 28Fennelwindow: from April 23 to April 30harvest: from June 21 to June 28Lettucewindow: from April 10 to April 30harvest: from May 14 to June 3Potatowindow: from April 11 to April 30harvest: from July 9 to July 28Peawindow: from April 2 to April 30harvest: from May 26 to June 23Parsleywindow: from April 21 to April 30harvest: from July 9 to July 18Radishwindow: from April 2 to April 30harvest: from April 26 to May 24Arugulawindow: from April 2 to April 30harvest: from April 26 to May 24Spinachwindow: from April 2 to April 30harvest: from May 6 to June 3 | High81.08% |
| Start indoors10 crops | Broccolistart indoors: February 28harvest: from June 8 to November 9Tuscan kalestart indoors: February 27harvest: from May 26 to November 19Fennelstart indoors: March 19harvest: from June 21 to November 9Strawberrystart indoors: March 6harvest: from June 1 to November 19Lettucestart indoors: March 13harvest: from May 14 to November 9Eggplantstart indoors: April 26harvest: from August 29 to October 16Pepperstart indoors: April 20harvest: from August 18 to October 22Tomatostart indoors: April 23harvest: from August 12 to October 29Rosemarystart indoors: March 21harvest: from June 30 to November 9Sagestart indoors: March 10harvest: from June 19 to November 9 | High80% |
| Transplants7 crops | Broccoliwindow: from April 10 to April 30harvest: from June 8 to June 28Tuscan kalewindow: from April 2 to April 30harvest: from May 26 to June 23Onionwindow: from April 1 to April 30harvest: from June 29 to July 28Fennelwindow: from April 23 to April 30harvest: from June 21 to June 28Strawberrywindow: April 3harvest: June 1Lettucewindow: from April 10 to April 30harvest: from May 14 to June 3Sagewindow: from April 21 to April 30harvest: from June 19 to June 28 | High81.86% |
| Wait0 crops | - | - |
Direct sowing (12)
Swiss chardwindow: from April 9 to April 30harvest: from May 28 to June 18›
Carrotwindow: from April 9 to April 30harvest: from June 7 to June 28›
Tuscan kalewindow: from April 2 to April 30harvest: from May 26 to June 23›
Onionwindow: from April 1 to April 30harvest: from June 29 to July 28›
Fennelwindow: from April 23 to April 30harvest: from June 21 to June 28›
Lettucewindow: from April 10 to April 30harvest: from May 14 to June 3›
Potatowindow: from April 11 to April 30harvest: from July 9 to July 28›
Peawindow: from April 2 to April 30harvest: from May 26 to June 23›
Start indoors (10)
Broccolistart indoors: February 28harvest: from June 8 to November 9›
Tuscan kalestart indoors: February 27harvest: from May 26 to November 19›
Fennelstart indoors: March 19harvest: from June 21 to November 9›
Strawberrystart indoors: March 6harvest: from June 1 to November 19›
Lettucestart indoors: March 13harvest: from May 14 to November 9›
Eggplantstart indoors: April 26harvest: from August 29 to October 16›
Pepperstart indoors: April 20harvest: from August 18 to October 22›
Tomatostart indoors: April 23harvest: from August 12 to October 29›
Transplants (7)
Broccoliwindow: from April 10 to April 30harvest: from June 8 to June 28›
Tuscan kalewindow: from April 2 to April 30harvest: from May 26 to June 23›
Onionwindow: from April 1 to April 30harvest: from June 29 to July 28›
Fennelwindow: from April 23 to April 30harvest: from June 21 to June 28›
Strawberrywindow: April 3harvest: June 1›
Lettucewindow: from April 10 to April 30harvest: from May 14 to June 3›
Sagewindow: from April 21 to April 30harvest: from June 19 to June 28›
Wait (0)
- -
Method and limits
What should I start with in April in Viterbo?
Start with Swiss chard for direct sowing during from April 9 to April 30. The estimated harvest is from May 28 to June 18 and the best estimated success rate is 80%.
Should I use indoor seed starting in April in Viterbo?
For Broccoli, the useful indoor seed period is from February 28 to July 31. The expected transplanting window is from April 10 to September 11 and it is best to start seedlings 42 days earlier.
How should I read April climate for Viterbo?
Check irrigation and soil moisture: the average dry spell reaches 9.87 days, even with average rain of 56.32 mm. Monthly averages: minimum 7.4 °C, maximum 17.84 °C, rain 56.32 mm, and dry spell 9.87 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
- Local historical climate: NASA POWER Daily API
- Representative weather point: GeoNames
- Crop needs: OrtoClima
- Last data update: June 21, 2026
