If you've noticed tiny, dark insects flying around your houseplants, you likely have fungus gnats. These tiny flies can be a nuisance indoors and may also damage your plants.
Fungus gnats lay their eggs in moist soil and their larvae feed on plant roots and decaying organic matter. Because of this, the key to managing fungus gnats is to let the soil dry out in between watering and don't overwater plants. Water plants from the bottom using saucers under pots. This keeps the top of the soil dry, discouraging fungus gnats.
Sticky traps can be placed in pots or near plants to catch fungus gnat adults. This is also a great way to monitor for fungus gnats. Pesticides, including several biological pesticides like...
- Author: Elaine Lander
As the weather warms up, we see more insect activity in gardens and landscapes, and you may also notice more activity of insect pests in your home. Common insect pests found indoors in springtime can include carpet beetles, fleas, fungus gnats, and boxelder bugs.
In our recent post on carpet beetles, we shared that the adults of these beetles prefer to be outdoors but the immature larvae can feed on fabric, carpet, or other natural materials in your home. See our Pest Notes: Carpet Beetles for more management information.
Cat fleas are the most...
- Author: Belinda J. Messenger-Sikes
We took a look at which titles were of greatest interest during the first five months of the COVID-19 pandemic when many Californians were staying home. These are the top ten most viewed Pest Notes from March to August 2020.
#10 Pocket Gophers
Pocket gophers are active all year round but,...
/h2>If you have house or office plants and have ever seen small, dark-colored insect swarming around them, your plants could have fungus gnats.
Fungus gnats are tiny flies that as adults, resemble mosquitoes. Fungus gnats don't bite people, but their presence can be annoying. Their larval stage lives in wet, overly moist potting mix, where they feed on decaying matter.
The first step to managing fungus gnats is allowing the soil in your houseplants to dry out in between watering. To read more about how to manage this pest, visit the UC IPM publication Pest Notes: Fungus Gnats.
- Author: James A. Bethke
- Author: Mary Louise Flint
[From the July 2014 issue of the UC IPM Retail Nursery & Garden Center News]
Fungus gnats are small flies that infest soil, potting mix, or plants grown in pots or containers (Figure 1). Your customers may complain about fungus gnats resting on or swarming around plants or soil or flying around windows in their houses.
Adult fungus gnats don't harm plants or people, but they can be annoying. On the other hand, fungus gnat larvae (Figure 2), which live in soil and feed on roots, can be damaging when their numbers are very high, sometimes causing plants to wilt. Their feeding...
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