Got a niggling houseplant query? In her new column, our expert will offer advice on everything from root rot to leaf drop. This week, how to treat and prevent the pesky fungus gnats that thrive in moist soil
What’s the problem?
I have tiny little flies all over my plants.
Diagnosis
Those flies are called fungus gnats, not to be confused with fruit flies. Fungus gnats are attracted to moist soil, where they lay their eggs. Often, they hitch a ride into your home through store-bought potting soil or new plants. Plants that favour constant damp soil, such as ferns, are most at risk.