Cutworms can be the bane of newly planted gardens, demolishing weeks of work in a single night. Make cutworm “collars” to keep pests out—and protect young seedlings. Cut off the bottom of a yogurt or sour cream container so that it's open at both ends. Sink it about an inch into the ground around each seedling, leaving a portion of the container exposed. Once the plants are well established and the stems harden, you can remove the collar.