Cloches were utilized in France to protect plants from frost and cold conditions, but were extremely heavy and fragile as they were made from hand-blown glass. Durable, reusable, and made from UV stabilized recycled plastic. Use to protect early summer plantings from late spring frosts. They conserve sunlight during the day and keep plants warm during the night. Protect overwintering herbs and less hardy perennials. Also protect against certain pests like birds and safeguard against wind and storms. Can be held firmly to the ground using our ground staples through the holes in the base. Adjustable air vent on the top allows for improved ventilation and humidity control. 13" diameter x 10" high. Unit Ship Weight: 3 lbs.