Scarid fly larvae / Fungus gnats

There is an abundance of information on Scarid Fly Larvae and the damage they can do when eating a plants roots. Plants look lethargic and begine with symptoms of root rot like wilting or yellowing or nutrient deficiencies like twisted leaves and discolouration of the foliage. We don't really feel the need to write a lot about them, just how to fix them.

Diagnosis

  • the adults are a small black fly - you would likely have seen a few.
  • larvae like like little worms/grubs and if you flush the media you may see a few if you look carefully.
  • plants roots are failing so plants will be 'sick' slow maybe wilted and twisted.
  • adults lay larvae in wet media to protect them from preditors

How to get rid of Scarid Fly Larvae

  • create a dry barrier at the top of media with perlite or growstones/soil aerator/gnatnix so adults stay away. About 30-50mm
  • Inside - cover any inlet with a fabric that will catch the adults and seal your room
  • Outside - make another area nearby more attactive - wet slices of potatoes will attract them - wetter soil nearby that is wetter than your growing media...
  • sticky traps can catch a lot of adults
  • Eradicator is a drench that will suffocate small larvae and is not toxic to plants - preventative doses every 30 days should work
  • Scarid fly drench - made from Neem oil will work - don't flush straight away but flush at some point
  • Gnatural - bacteria that attack the larvae
  • Scarid 10 is used as a spray on the top of the media - it provides around 7 days protective barrier like a surface spray against adults landing on the media
  • Success Ultra is used as a drench - bacteria based - not dangerous to humans.
  • mite rid is used as a drench as well - based on Neem oil
  • Bug kill or some similar aerosol will be effective on adults as aerosol droplets are very fine, and tend to float towards the flying insects due to electrostatic attraction (the beating of their wings) and should be non-toxic to plants

Secondary effects 

  • Most of the time root damage will end up becoming root rot using one of the following treatments will help
    • using a systemic fungicide like rot guard will kill any infection in the plant. Rot Guard replaces Fongarid.
    • A sanitiser like Hydrosheild will help kill off pathogens on contact in the old media
    • Beneficial organisms and enzyme products like Drive will help reduce pathogens, break down dead roots and stimulate new roots.


Bug Kill spray 350g - Aerosol can

Bug Kill spray 350g - Aerosol can

$8.00

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Bug net 150mm

Bug net 150mm

$10.00

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Bug net 200mm

Bug net 200mm

$12.00

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Bug net 250mm

Bug net 250mm

$13.00

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Bug Screen 300mm yellow pack

Bug Screen 300mm yellow pack

$20.00

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Eradicator - Scarid fly drench - 100ml

Eradicator - Scarid fly drench - 100ml

$20.00

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Eradicator - Scarid fly drench - 200ml

Eradicator - Scarid fly drench - 200ml

$32.00

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Eradicator Scarid Fly drench 1litre bottle

Eradicator Scarid Fly drench 1litre bottle

$135.00

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Gnatnix 9litre bag Scarid fly barrier

Gnatnix 9litre bag Scarid fly barrier

$33.00

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Gnatural Scarid Gnat Bio Insecticide 10g

Gnatural Scarid Gnat Bio Insecticide 10g

$35.00

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Growstone soil aerator 15L - made from glass - Scarid fly killer barrier used as a layer

Growstone soil aerator 15L - made from glass - Sca

$18.00

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Mite-Rid 1 litre - botanical oils non-toxic - use for mites scarid fly white fly

Mite-Rid 1 litre - botanical oils non-toxic - use

$350.00

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Mite-Rid 45ml - botanical oils non-toxic - use for mites scarid fly white fly

Mite-Rid 45ml - botanical oils non-toxic - use for

$32.00

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9% OFF RRP $35.00
Scarid Fly Insecticide Scarid 10 100ml

Scarid Fly Insecticide Scarid 10 100ml

$32.00

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Scarid Fly Insecticide Scarid 10 250ml - used as a surface spray on media

Scarid Fly Insecticide Scarid 10 250ml - used as a

$52.00

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Scaridfly Drench 45ml to kill scarid fly larvae

Scaridfly Drench 45ml to kill scarid fly larvae

$35.00

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Soil Aerator 42L from Growstone- made from glass - Scarid fly killer barrier used as a layer

Soil Aerator 42L from Growstone- made from glass -

$50.00

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Yates Success Caterpillar and Scarid fly insecticide 200ml

Yates Success Caterpillar and Scarid fly insectici

$29.50

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Yellow Sticky Trap each - traps a wide range of insects including scarid fly white fly - yst30

Yellow Sticky Trap each - traps a wide range of in

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Buy 4 to 29 : Pay $2.50

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