Zenport SH3240 Portable Pop Up Greenhouse for Small Plants/Shrubs, 26-Inches High SH3240 mini portable pop-up greenhouse protects shrubs, small trees, bushes and plants in the garden from cold, frost and other harsh weather Use to protect small plants, and patio or balcony plants Constructed with heavy duty clear polyethylene and spring steel Folds flat for storage Circular greenhouse measures 19.25" W by 26" H