problem with black fly

dave devilgas at
Fri Jan 31 07:10:52 EST 2003

hi beverly. thanks for the reply.

fungus gnats. makes perfect sense as the soil is a touch on the fungusy (?)
side. will try the sand method some time next week.
the yellow sticky traps you mention.....are they commonly available? fwiw, i
like in the you know of any brand names etc that i may look out for?

once again, thanks for the reply.


> You've probably got fungus gnats, which live on decaying organic matter
> in the soil.  You can control them by keeping the soil, especially the
> surface soil, drier, or covering the soil with a cm or two of plain sand.
> The flies are reluctant to lay eggs in dry or poor soils.
> There are also some biological and chemical products that are listed for
> fungus gnats, but to save money and avoid pesticides, try the dry surface
> route first.
> If you need to get the number of adults down fast, e.g. your co-workers
> are complaining, fungus gnats are attracted to the yellow sticky traps
> sold to control white flies even more than white flies are.

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