Want more lettuce? Try this 4-foot-wide, 5-foot-tall mobile planter. Since it’s easy to wheel around, you can plant earlier in spring and move seedlings into the garage on cold nights, extending the growing season. And in summer heat, you can position the lettuce in cool afternoon shade. Plus, the tiered planter keeps the harvest off the ground, where it stays slug- and snail-free.
Use 2×4s for the frame of the structure and 1×4s as shelves to support the aluminum rain gutters. Secure each gutter and piece of wood together with deck screws and drill ½-inch drainage holes along the bottom of every trough. Before planting up the gutters, layer the bottom with landscape fabric to prevent soil from washing out and to hold in extra moisture.