Thank you Myraim! Mine are in a greenhouse environment during the winter. We made this 20 years ago. We were younger and had cousins to help pour the cement. Rbt could see better before his glaucoma and made the frame out of PVC. It has 2 pieces of lattice over the top with zip ties holding it on. It also has 3 flood lamps that put off some heat that we can turn on or off. Then in the winter we put a space heater that we can also turn on and off and cover it in heavy dut plastic. It is like a hot house with lots of humidity when we uncover it.