Sorry I didn't reply sooner, somehow I didn't get a message that folks had been asking questions.
Devon, just give us a holler to come and visit.
Seth, we do have 1 battery bank tube through the center which we hook up in the fall. It has kept the ground fairly warm. The citrus and avocados are thriving. In looking at our recording thermometer, we did have a week of cloudy days in January and the temp inside dipped to 32F for about 15 minutes. The lime and large avocado near the windows suffered slightly, but they are springing back. The tomatoes on that end also bit the dust, although the peppers are fine. Were we to do it again, we'd use more tubes and place some coming into the middle as well as the end. The blower is placed to blow the air, but it doesn't push
enough through the tubes, so I'd also place a "sucker" blower at the incoming ends to help move the air more. Also, we'd place the blower on the east end if we were going to have windows. I'm not sure they are really needed. It's nice in the summer to open the greenhouse, but when we started leaving it closed, the temps regulated themselves somewhat. The biggest problem we've had (besides some bugs) is keeping it cool in the greenhouse. Even in the wintertime the temps can get high if it is sunny outside. We are in Zone 4 and the greenhouse works great. I think it is due to the walipini effect of being 4' below grade. This design would work well at 7500' as it provides so much protection from the elements.
The peaches and plums we planted in the vestibule have all bloomed and leafed out. I hand pollinated, but am not really expecting fruit this year as we don't have any pollinators yet. We had problems last year with aphids and the dreaded red spider mite! This company doesn't sponsor me, but I have to share them - Arbico Organics has saved the day. We got 10,000 ladybugs that arrived ALIVE! No more aphids, and we haven't seen any this spring either. Also, I ordered mite predators. Assassin bugs and some other crawlies took care of the problem. I'm amazed. And we didn't have to spray at all. I think we might have a
mouse. As soon as the strawberries get some red, they get chewed. Dang cat is slacking.
Dorothy, we've had a low snow year. It has all evaporated and/or melted and we are already dry. Dang it. If it is going to be cold and windy, we should at least get some moisture along with it. We've been sitting in the below 10% humidity, with most days in the 1-5% range. Being in Cheyenne, you should be one zone warmer and will be able to grow more plants than we can. There is a
permaculture group in Laramie County with some really nice folks.