Mini-growhouse protects tomato transplants from cold temperatures and chilly winds, so you can set plants out in the garden weeks earlier. You’ll be amazed at how much faster plants grow — which means an earlier harvest of your first juicy fruits! Set it up in seconds: Release the toggles and it pops open, ready to place over plants. We made it extra large — 18" in diameter and 28" high — so you can leave it in place to protect plants longer. The top is made from mesh to allow warm air to escape, preventing overheating, and it also lets water in. When the weather warms up, you can unzip the top and leave it open for even better ventilation. Also good for peppers, eggplants and other heat-loving plants. Made from durable, reinforced greenhouse fabric. Flattens for easy off-season storage.