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Carrot fly is the most problematic pest of carrots and allied vegetables. It can make a large proportion of the crop inedible.
Biological pest controlHardy winter vegetablesVegetables in containers
Carrot fly is a small black-bodied fly whose larvae feed on the roots of carrots and related plants, such as parsnip, parsley, celery and celeriac.
Carrot fly larvae tunnel into carrots, causing them to rot.
Cover carrot crops with a fine mesh sheet (available at garden centres) to prevent the carrot fly colonising the crop in the early stages.
Lambda-cyhalothrin (Westland Plant Rescue Fruit & Vegetable Bug Killer) can be sprayed against the adult stage of this pest. There are no soil-applied persticides available for garden use against carrot fly larvae.
Pesticides for gardeners (Adobe Acrobat pdf document outlining pesticides available to gardeners)
Common name Carrot flyScientific name Psila rosaePlants affected Carrot, parsnip, parsley, celeriac and celeryMain symptoms Rusty brown tunnels in the tap roots. Slender creamy yellow maggots may be seen in the rootsMost active May-October
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© The Royal Horticultural Society 2011 / RHS Registered Charity № 222879/SC038262