Come winter time and middle of summer time in Texas, I am always glad I purchased this greenhouse.  It really protects the plants and stays nice and moist/humid enough so that I don't even have to water the plants too often.  We have had the cover blow off once, so prob needs to be tied down if you live somewhere windy.  Also, I drilled small holes at every connecting piece and pushed a cheap nail thru and bent it so that the polls would not come apart even if I had to move it.  Smartest thing I ever did.