Garden water calculator
See how much water your vegetable garden needs in the hottest part of summer.
Your result
Water a day—
Water for the dry spell—
These are planning figures. Results depend on your climate, soil and experience.
How it is calculated
- In July and August a garden needs about 3–5 L per m² a day.
- Drip irrigation and mulch save 30–50 %.
- Multiply the daily need by the longest dry spell to see how much to store.
- In the southern hemisphere, the same applies to January and February.
In the guide: Water budget: what you have and what you need
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