L. Barry wrote:I found these flies are now in my two pots of seed potatoes. What do I do with these flies when the soil for these crops needs to stay damp?
L. Barry wrote:The potatoes are outdoors far away from anything else that's growing. So they are appearing both indoors and out. I've tried the vinegar and dish soap solution but they aren't interested. Maybe they aren't fruit or fungus flies? I'd snap a picture but they are far too small.
Finding tiny fruit flies, or fungus gnats, loitering just above the surface of potted plant dirt is a common nuisance for indoor gardeners. These pests feed on the decaying organic matter and fungi in potting soil, although they do not cause any damage to plants. Fruit flies depend upon rotting organic debris to complete their life cycles, which is why you may also find them in the kitchen as they zero in on overripe fruits.
L. Barry wrote:I'm in zone 2 (sub tropical) and we're actually entering into summer now. Gold Coast in Queensland to be exact.
So they may not be harmful to plants? I hope so. I've never seen them on the plants directly (heard the larvae eat the root hairs though?) so maybe that's a good sign. I'll try the sand method next.