Papajet 20x10x7.5 FT Premium Greenhouse A greenhouse is a must for a keen gardener - it's ideal for sowing seeds, taking cuttings, growing tender plants and crops and overwintering tender plants. Feature: Ideal for home gardener or plant collector use 4 Season Use 99.9% Harmful UV rays block Q1: Does it keep plants warm in winter? A1: The temperature inside the greenhouse may be 20-40 degrees during the day and the same as the outside temperature at night. This is in the absence of any supplemental heating or cooling. So we recommend to add a heater inside greenhouse Q2: Will it stand up to heavy wind? A2: This greenhouse can stand up to 65 mph wind at least. Q3: What is the best way to anchor the greenhouse A3: These greenhouse are all anchored to a foundation. Bury the 4 corner stakes of base into the soil and fix them with concrete