Soil & Materials Needed

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Recommended depth: 6" for greens, 12" for most veggies, 18"+ for root crops like carrots and potatoes
Mel's Mix (1/3 compost, 1/3 peat moss, 1/3 vermiculite) is ideal for square foot gardening
Fill the bottom 6–12" with cardboard, logs, or leaves (hugelkultur) to save on soil
Soil settles 10–15% in the first season, buy a little extra to top off
Mulch saves water, 2-3 inches reduces watering needs by up to 50%
Buying soil in bulk (cubic yards) is 40-60% cheaper than bags for 3+ beds