Zenport SH3240-10PK Pop-Up Greenhouse Protects Shrubs Small44; Box of 10 The Crew Box of 10 Pop-Up Greenhouse Protects Shrubs Small Trees Bushes Plants Garden from Frost. This Pop-Up Greenhouse provides your outdoor plants Fall Winter and Early Spring protection from harsh The Jumbo Pop-Up Greenhouse offers protection from frost snow ice and harsh winds. Sturdy construction this Mini Greenhouse is built for year after year after year of use and re-use. Made from Heavy Duty Clear Polyethylene and Spring Steel you will get many years of use from this unit.