How much space does it take to feed a family from the garden? The honest answer depends on what you grow, your climate and how much you want to eat fresh or put away, but gardeners use simple rules of thumb to get started. This calculator turns them into a bed count.
Area per person
Common planning figures are:
- About 100 sq ft of beds per person for fresh vegetables during the growing season;
- About 200 sq ft per person to eat fresh and also can, freeze or store part of the harvest;
- About 400 sq ft per person or more to grow most of the vegetables a person eats in a year, including storage crops such as potatoes, winter squash and onions.
These figures assume intensive beds, where plants are spaced closely and the soil is never walked on. Traditional single rows with wide paths between them take more ground for the same harvest.
From growing area to beds
The growing area is people × area per person. For a family of 4 eating fresh, that is 400 sq ft. With beds of 4 × 8 ft (32 sq ft each), you need 400 / 32 = 12.5, rounded up to 13 beds.
Beds are rarely wider than 4 ft, so you can reach the middle from both sides without stepping on the soil. Paths between beds add space: 25% more is typical for 18 to 24 in paths, which brings the whole garden to about 500 sq ft.
Water
Most vegetables need about 1 inch of water a week in summer, from rain or irrigation. One inch over one square foot is about 0.62 gallons, so 400 sq ft of beds need about 249 gallons a week when it does not rain. Drip lines and mulch cut evaporation a lot.
Getting more from less space
- Succession planting: follow early lettuce or peas with beans or squash in the same bed.
- Grow vertically: trellis cucumbers, pole beans and tomatoes.
- Choose high-value crops: herbs, salad greens, tomatoes and peppers return more per square foot than corn or pumpkins.
- Start smaller: a first garden of 3 or 4 beds that is well tended produces more than a large one overrun by weeds. Add beds as you learn what your family actually eats.
Pick a sunny spot with at least 6 to 8 hours of direct sun a day, close to a water tap.