I've built a small hobby greenhouse ... mostly for overwintering my container citrus. I've set up one side with a bench that I want to use for rooting cuttings .. citrus, roses, grapes, etc.. I'm getting ready to install a misting kit over the bench. What's the recommended misting schedule that I need to prgram my timer ? How many seconds on .. how many minutes between misting, etc. ? Thanks

The goal in a mist system is to moisten the leaf surfaces, then let them almost (but not quite) become surface dry and do it again. The exact timing depends on the humidity in the greenhouse, air temperature, amount of air movement, and who knows what all else -- anything that affects the rate of drying. So the best answer is to set it up, choose a timing, and watch it for several minutes, during the warmest, sunniest part of the day. Then adjust the timing as needed.

In any case, it can be off at night. And during the day, probably one misting per 5-8 minutes will be adequate, long enough to get things wet, perhaps 3-8 seconds of mist.

Our system at Florida Southern College is outdoors, with no roof, so it gets full sun and whatever the weather is doing at the moment. We run it from sunrise to sunset, 6 seconds every 5 minutes. And that works well for us. But the climate in your greenhouse won't be quite like ours. So you may have to tinker with it.

Malcolm

Thanks ! I just needed somewhere to start

Right now, it's 102 degrees outside and 110 degrees in my greenhouse (and that's with a 60% shade cloth). I don't have any plants in it at the moment. When I ordered my exhaust fan and intakes, I thought I had slightly oversized them ..... but I can't get it any cooler

http://www.igcusa.com/greenhouse_cooling_information.htm
See this greenhouse cooling web site.

Greenhouse exhaust fans need to be capable of completely exchanging all the internal greenhouse air at least every one minute.

Millet