Container Vegetable Gardens

Potting mixes for container gardens need to drain freely, but still retain moisture. My base potting soil mix contains (clockwise from upper left) coarse builder's sand, high-quality organic compost or worm castings, coconut coir, and small lava rock. I supplement this with additional compost, fresh worm castings, and organic soil amendments, with the amounts varying depending on what I'm planting. Photo by Steve Masley