Answer: All vegetables grow best by getting as much sun as possible. Another condition is whether they like cool or warm conditions: lettuce grows best in cooler conditions and tomatoes, peppers, and watermelons prefer warm growing conditions. For spacing, watermelons need space and grow best on hills 6-8' apart. The other vegetables when grown in rows, spacing between plants: tomatoes when staked-18-24" when not staked 30-36" bell peppers 12-15" lettuce 12-15"
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