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Growing Mint, also Garden mint

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12 Jul 19 Sally (Australia - temperate climate)
I have a few patches of mint - in a garden bed and in pots. It thrives in spring and summer, but still grows quite well through winter. In the last two years, though, I have had a pest; a tiny fly that must lay its eggs in teh growing tips. This causes the tiny terminal leaves to stick together as the eggs hatch and teh larvae feed. If I prise the tip leaves apart I can (just) see tiny, tiny yellowish maggots. I took them to a lab and examined these under a microscope. Sure enough they are typical maggots - legless, hairless, pointed at one end and flat at the bum (spiracle) end, wriggling about. They are about 1 mm long. It kills the tips - they go brown and once the larvae change into adults the tips dry out and die. Does anyone know what the ID of this fly is? And what I should do? I'm guessing remove all tips, put out yellow sticky paper for the adult flies and maybe spray with spinosad? Or stop growing mint for a season??? Help! I do love mint in my mojitos!
15 Jul 19 (Australia - temperate climate)
I'd suggest you spray and yellow sticky paper and see how it goes.
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