CROP YIELD VERIFICATION

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A common question about the Garden of Eden Project is whether a relatively small amount of land can realistically produce enough food for the people living on it. The short answer is yes, when the land is carefully designed and intensively planted organically.

How much food does one person need? Most adults can live comfortably on roughly 6 to 8 pounds of fresh plant foods per day (vegetables, fruits, nuts, grains, and legumes combined). For planning purposes, we use 7 pounds per person per day as a practical average.

How much land is required? Published average yields for a wide range of common food crops show that one acre of well-managed land can produce approximately 10,000 to 11,000 pounds of food per year.

Therefore:
One quarter of an acre can produce roughly 2,600 to 2,700 pounds of food per year
and 2,650 pounds divided by 365 days = 7.3 pounds of food per day

This is enough to feed one person for a full year from a single harvest season, using a diverse mix of crops.

Are these yield figures realistic?
Yes. Even higher-yielding crops such as carrots (around 19,400 pounds per acre) work out to less than half a pound of produce per square foot of land which is a completely reasonable amount that anyone can verify by weighing produce in a store. Most other crops yield less than carrots, which makes the overall average even more conservative.

The figures below come from two independent sources:
1. The Owner-Built Homestead by Ken & Barbara Kern (organic/home-scale yields)
2. California Statistical Abstract (1992 commercial crop data)

When averaged together, the overall yield across dozens of common fruits, vegetables, nuts, and grains is approximately 10,600 pounds per acre.

Important note:
These numbers assume good soil, proper management, and a diverse planting plan. Actual results will vary with climate, soil quality, water availability, and growing skill. The Garden of Eden designs use these averages only as a realistic planning baseline, not as a guarantee.

The project itself begins with a practical 10-acre pilot sized for about 20 residents, rather than large theoretical calculations. The math simply shows that the underlying productivity assumptions are grounded in real agricultural data.