All my 1000 tropical plants go outside in March/April. I don't worry one iota about insects while they are outside. Until I started bringing plants into the solarium this fall, I really had no problem with gnats/white flies/scale. But since the solarium is a closed environment, there are no natural predators for those insects. I don't use a bit of peat but do use a lot of milled sphagnum moss in my terrestrial mixes.
