The peaches are Sweet Dream. Nectarines are Honey Royale and Honey Diva.
I'll be putting the reflective fabric back down as soon as I can clear out all the old trees and the figs.
The trees are growing in the ground just as they would outdoors. The trees on the outside edges do root outdoors to some degree I'm sure. So far I haven't seen too much effect. But have thought about putting up rain gutters to catch the runoff for blueberries or for use in the evaporative cooling pads.
In humid areas rain running off the greenhouse roof could really mess with watering especially in a small greenhouse.