@amcoffeegirl; I have three guns. And kudos to the person who manages to move the display trees without my awareness; especially the Philipensis.
Also, as far as a greenhouse is concerned...I'm in Zone 9B. Our average extreme low temperature range is between 25-30°F. Last year I saw 28°F literally once and below 32°F a maximum of five times, I don't remember. I'll be using thermal clothe. The stuff I have have gives an +8°F advantage.
I don't know if you noticed, but my sprinkler's have a valve near the ground and the pipe continues up towards the sprinkler head. Ground water in my area of Florida is between 72°-77°F. Having the thermal clothe over the plants and the water on the ground beneath them; I shouldn't see a problem in a Florida freeze. Thankfully; I don't have a water bill.
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@Bunjeh; I don't understand if you're making a joke about the trees being my children, or if you think I have children? Either way, I do not have children, and my ex is not a face I'd like to see again. She's been replaced already. The curvy, dark haired, chica is mine and the ginger is my roommates. They look classy with this photo filter.