It's been around 90+ degrees in the greenhouse. I've have two fans, the four roof windows and door open and two shade clothes on top, and I still am getting readings up in the high 80's-92, so it's time to start to shut it down for the season. The air temps here have been 70-80, so it's been a hot spring so far. Does anyone else shut their greenhouses down during the hot weather, or do you just keep it going somehow. I was thinking that I may take the oppurtunity to grow a couple heat tolerant plants just for kicks, but what could grow when the temps are going to be way over 100? Cactus is the only thing that comes to mind? I usually take this time to clean things up. Refresh the benches with some paint, clean the inside with a fungicide and give the outside a light power wash. What are your thoughts?

I shut down both of my GHs, @843rphyllis. Like you, without AC, there is no way to keep my GHs even relatively mild when spring arrives. It is not unusual for my spring and summer temperatures to soar into the 110's with all vents/doors open, 80% shade cloth, and four fans running at their max. The only thing my greenhouses are good for in the spring is starting seeds and in the spring/summer is rooting plumeria cuttings. I do leave some aloe and jade in a greenhouse. They don't seem to care how hot it gets as long as they get enough moisture. I will also do a thorough cleaning/disinfection while the greenhouses are mostly empty and refresh my cypress mulch that is my subfloor. One of my fabric floors is five years old and I have torn it at the entrance. I will replace that greenhouse fabric this spring or summer or perhaps simply overlay that fabric with new fabric.

Gonna be 90 degrees tomorrow. I have a few of the biggest pots in the GH left and the dormant plumeria. If I have time before work I will get those big ones out of there. It was only 86º today and was over a 100º in the GH today. All the windows are open. It's time to shut mine down and give it a good spring cleaning inside and out.

86 degrees? Were still getting pounded with rain. Though I think Monday should be the last of it for now. Looks like I can go back into construction mode next weekend.

That's great! It's such an exciting time, I know you must be eager to get it done

I moved all my plants out of the GH mid February this year -- it was just too warm in Central Texas. And last year they were out by late March.