ð§ Irrigation & Watering
Enter your garden size, crop type, and climate to find out how many gallons per week your garden needs â and subtract what rain provides.
Related Calculators
Most vegetable gardens need 1 inch of water per week â either from rain or irrigation. One inch of rain over one square foot equals about 0.623 gallons.
Gallons needed = Area (sq ft) Ã Depth (inches) Ã 0.623
This calculator adjusts for crop type and climate multiplier, then subtracts expected rainfall to give you just the irrigation amount.
| Crop | Inches / week |
|---|---|
| Tomatoes | 1.5 â 2 |
| Lettuce, spinach | 1 â 1.5 |
| Cucumbers | 1.5 |
| Beans | 1 |
| Corn | 1.5 â 2 |
| Herbs | 0.5 â 1 |
| Root vegs | 0.75 â 1 |