Fungus gnat larvae are small, whitish maggots with black heads that are about half a centimetre at their largest. If you poke around in your potting soil with a dibber or a pencil, you can often see them if they are present. The adults are not strong fliers, and they are often found on top of soil or resting on plant stems and leaves. Fungus gnats can complete an entire life cycle within three weeks, so a small population can quickly explode. On the plus side, they are short-lived, so eradication, if an effective method is found, should not take very long.
|Fungus gnat larvae on a dime|