Oh the horrors that lurk in your Onions, Leeks and Garlic!! You may remember that a little while ago I pulled up all my Leeks. If you don’t remember, well I did. I bought them home and gave them a quick clean off, and then put them in the greenhouse to dry off a bit more before I finally took their outer leaves off and got them ready for the freezer. I’ve spent the last hours swearing in the greenhouse (if you have delicate ears, I hope you didn’t hear what I said) and I was getting very cross, because as I was removing the outer leaves of my Leeks, on practically all of them I found some “Allium Leaf Miner Pupae’s”. I’m not amused!! These little buggers have only been around since 2002 and usually in the south of the UK! I’ll see what I can salvage from my leeks, but it’s not looking good. There are no sprays to prevent them, the only way to try and stop them is to use very fine mesh. Let me know if you’ve been having similar problems where you are. This is the second year I’ve had them, but last year wasn’t that bad. I may have to re think as to what I do when I grow them next year.
The horror of Allium Leaf Miner!!
Clairesallotment's Blog 
That’s really bad luck Clare, I’m not sure where you are in the UK, but here in the East Midlands, we are starting to get hit with this pest.
Most of my Leek growing friends have been hit with this pest, however I growing a small amount of about 30 mini leeks under enviromesh & so far every leek has been clean, but you don’t get a lot of Leek & a giant enviromesh cage is just not feasible.
Best of luck.
I’m in the South East and they’ve been around for several years now. I think they must slowly be migrating north, so watch out for them. I may have to try mesh next year.
Our allotment has them but ive been lucky so far. I love leeks more than onions😢
You know what, I think I do as well.
Thank you for sharing Claire so far i have not come across it but then have not harvest any if they germinated in the soil might do them in the greenhouse from seed next season
Watch out for them, they’re little buggers. You can still eat the leeks, but just have to pick out any that you find.