Sciarid fly (also known as compost fly) is a common pest of greenhouse plants in the spring.
There are around 600 different species of sciarid within Europe although the species that cause most problems for growers are Bradysia paupera (the Black fungus gnat) and Lycoriella auripila (the Mushroom sciarid).
Young bedding plants, especially bizzie-lizzies, can be affected with large numbers of small flies covering young plants, whilst larvae eat the roots.
The Sciarid flies crawl over the compost surface and if disturbed fly on to the lower leaves. The larval stage in the compost attacks the roots and can kill young seedlings.
To treat Sciarid fly, mix the nematodes with water and water directly into the affected pots / trays. Each pack of nematodes pack will treat up to 15sqm of compost. For smaller areas just make the solution stronger (you cannot overdose).
- Safe for plants - will not scorch tender seedlings or young plants.
- Safe for you - use on plants in your living room or conservatory.
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