If you live in a place where winter is particularly brutal, you can protect your plants with this cover. This plant cover guards your valuable flowers, vegetables, or other plants against biting cold snaps down to 21 F. Extend your growing season by protecting your shrubs with these covers, and helps to repel frost, wind, freezing rain, and snow. Insects won't be able to penetrate this high-tech cover, but sun, rain, and air can travel through the membrane to keep your plant healthy and well. The cover uses 2 flexible fiberglass rods to form a dome over the plant. Just slip it over the top, and use the 4 included stakes to secure the cover to the ground. The cover folds up in a snap for quick and easy storage in the sunnier months. Don't lose your plants to bitter cold, protect them with this cover.