I've had my HFGH for 1 month now.this is a un-heated greenhouse. I've started zinnia, columbine, nastursiums, black-eyed susans, painted daisies, sweet peas, lupines, larkspur, oriental poppies, snap dragons, petunias, green bell peppers, tomatoes, yellow squash, burbless cukes, and several bulbs. so far I've had very good results. 30's-40's at night, 50's-60's daytime. Inside daytime, 75-85. I have horrible snail and slugs not to mention deer! wanted to start them and give them a head start. transplanting squash, cukes and tomatoes now. sweetpeas next will go outside.