"Shore flies are the ring leader of nuisance insects in the greenhouse"

Shore flies (Sactella stagnalis) feed mostly on algae as well as decaying organic matter found in the growing medium, but cause no direct damage to greenhouse crops. They are known to transmit and spread disease throughout a greenhouse and if ignored may cause significant disease problems.

Shore flies are often confused with fungus gnats. Shore flies closely resemble fruit flies with both short antennae and legs and have five white spots on their dark colored wings. Shore flies are strong fliers and can quickly spread throughout a crop. Fungus gnats, on the other hand, have long legs, long antennas and look more like mosquitoes. They do not have white spots on their dark wings and are generally weak fliers.

Read more at PRO-MIX (Troy Buechel)

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