I have a shelf with fl. lights where I keep some cactus and succulents, some all year some just for the winter. I also have some Nepanthes and sundews. I got some new sundews (5) and now I see gnats in the LFS moss in the CP pots. How the devil do you get rid of these? I don't think they will bother the other plants, too dry. But I did have to toss one orchid that was in prime agra (sp?) rocks that was full of them. I checked the other orchids and they seem fine. Suggestions? I got to get rid of these things!!!!!!!!!!!!!!!!
Try gnatrol. Google it . I had a problem with the fungus gnats in my greenhouse grown peppers this summer. I used the gnatrol and also used an inch layer of sand on top of the potting soil. The sand is supposed to dry out quickly enough to prevent eggs from successfully hatching in the soil. Between the 2 prong approach, I got the situation under control. Good luck.
I have some fungus gnats on my sundews and carnivorous plants. I figure they are food for the plants & so far are not too much of a bother. I think trying to keep the surface dry will be difficult since they are bog plants. I would try gnatrol as well as a solution. That shouldn't bother the plants.