phrag kovachii

First 2 are my phrag kovachii, look at those roots!!! Next is bulbophyllum sumatranum Next is Bangkok Sunset

Hello, I have an 8x16 greenhouse that I outfitted with RO water source and a Aquafog turbo XE connected to a humidistat and activated with a solenoid (at significant expense). I am biased to the cultivation of Phrag Kovachii though all othe slippers are welcome as appropriate. My set up works...