Watering Schedule Calculator
Get a personalized watering schedule for your vegetable garden based on plants, climate, soil, and season.
Click to select or deselect. At least one plant must be selected.
Water adjustment: 1x
Water adjustment: 1x
Standard in-ground watering
Water adjustment: 1.2x
Your Watering Schedule
Adjustment Factors
Watering Tips
- ✓Water in the morning (6-10 AM) to reduce evaporation and fungal disease
- ✓Water deeply and less often rather than shallow daily watering
- ✓Use mulch (2-3 inches) to reduce evaporation by up to 70%
- ✓Water at the base of plants, not overhead, to prevent leaf disease
- ✓Check soil moisture by inserting a finger 2 inches deep. Water when dry.
Signs of Over-Watering
- ●Yellowing lower leaves, cracked fruit, root rot
Signs of Under-Watering
- ●Wilting in afternoon, blossom end rot, curling leaves
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Common questions
Most vegetable gardens need 1 to 1.5 inches of water per week, including rainfall. This equals roughly 60 to 90 gallons per 100 square feet. However, the actual amount varies based on climate, soil type, and plant type. Sandy soil and hot climates need more frequent watering, while clay soil in cool climates retains moisture longer. Use our calculator above to get a personalized recommendation.
How This Calculator Works
Base water requirements come from agricultural extension recommendations for each crop, measured in inches of water per week. The calculator adjusts these baselines using four multipliers: climate (arid conditions increase evaporation by 50%), soil type (sandy soil drains 30% faster than loam), growing method (containers dry out 50% faster than in-ground beds), and season (summer peak demands 20% more water). Gallons-per-100-square-feet conversions use the standard rate of 0.623 gallons per inch of water per square foot.
Watering Strategies That Save Water and Improve Yields
- Drip irrigation and soaker hoses deliver water directly to roots with 90% efficiency, compared to 50-70% for overhead sprinklers. They also keep foliage dry, reducing fungal disease risk.
- Mulching with 2-3 inches of straw, wood chips, or shredded leaves can cut watering needs by up to 70%. Mulch also suppresses weeds and regulates soil temperature.
- Inconsistent watering causes more problems than slight under-watering. Blossom end rot in tomatoes, cracked carrots, and bitter cucumbers are all linked to irregular moisture levels.
- Need help with the rest of your garden setup? Check how much soil your raised beds need or find the right fertilizer for your crops.
Data last updated: March 2026