My heater is set to 37 when I'm getting chilling for stonefruit. That takes 45 days to get 900 hrs. Then I often heat to 10-15F warmer than outside. So ~42 mid January when chilling ends to 58 right now. For mango I'm going to try a greenhouse inside the greenhouse to keep it warmer from Oct to May. In summer it's low 90s as highs with lows in 60s. I haven't tried posting pictures here and don't have time to learn right now. Here's a recent thread on growingfruit: https://growingfruit.org/t/why-a-greenhouse-might-be-good-for-growing-fruit/36180
My greenhouse is the best money I've ever spent: best fruit, least disease and pests, no freezes or hail in 15 yrs, and to top that off I'm selling 3-4x the greenhouse cost in fig plants every year.
Very nice house! Fredericksburg area which includes Stonewall is the center of peach growing in Texas. It's big business, pick-ur-own tourist trap. Other pome fruits are also grown like plums. My only interest is tropical fruits when it comes to expensive greenhouse real estate - annona, avocados, mango, citrus, pineapple, maters, etc.
I have a friend who is also one of the biggest (and oldest) peach growers around here, like 100 acres, 26 varieties - Jenschke. For a while I raided some of his varieties for scions and put 30 grafts on a Harvester peach tree, apricot too. I got some June Prince bareroot trees from him and based on my culinary experience asked Barrett what he thought of this "new" variety. Said it was one of the best he has in the orchard. I agree, never had a better peach. It's trained to a single plane shape rather than a vase for ease of maintenance.
https://bestfredericksburgpeaches.com/our-peaches/They bought my 2 miles of irrigation poly pipe and all my Xmas tree choose/cut equipment and supplies. That's where the big bucks are - Xmas trees.
It's my understanding that Mennonites have big apple orchards and other stuff in and around the Chihuahua desert, or did until that horrible massacre of one Mennonite family in Mexico.