I planted my snowmobile trailer garden on April 24th. I planted 22 containers of cool weather crops including peas, carrots, lettuces, and spinach. When freezing weather is forecast, I simply roll the trailer into the garage and wait until the temperature warms up. This way you can be eating fresh vegetables before many people even plant their gardens. You can put 54 containers on a 2 sled trailer. Check out the photo gallery for pictures.
Scott