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Fungus gnats are a common pest among houseplants.These small flies tend to go unnoticed at first, slowly building their populations by laying eggs on the soil of our container plants.
Fungus gnats tend to breed in overwatered plants and flooded soils, like houseplants, gardens, and flower beds. These gnats are attracted to the fermented smell of decomposing fruits, flowers, and ...
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In houseplants, the presence of sciarids may indicate overwatering; they may be feeding on roots that have been immersed in water too long and are thus rotting, or the gnats may be attracted to fungus growing in saturated topsoil. Consequently, allowing the top two inches of soil [12] to dry may reduce their numbers. [13]
Most fungus gnats (Sciaroidea excluding Cecidomyiidae) live in forests with their larvae occurring in fungi, dead wood and soil. There are some which live in wetlands such as fens . [ 4 ] Several genera of Sciaridae and Mycetophilidae may reach high abundances in damp buildings with wet organic matter.
Pythium. Pythium-induced root rot is a common crop disease. When the organism kills newly emerged or emerging seedlings, it is known as damping off, and is a very common problem in fields and greenhouses. [2]
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