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Hi stephaniejane, they are very small (4-5mm) and look like this:
I have used insect proof netting for the past few years with great success
I have grown my carrots in large containers for the last few years.carrot flies do not attack,if carrots are higher than 18" so I make sure pots are taller than that,have never had any problems.
I think I have been told having garlic nearby helps, not sure if it hides the smell or something like that.
This year I sprinkled chopped - up leek remnants, trimmed chive stalks, and clippings from several mint clumps, all around my three rows of carrots. Turned out to be the best carrots I've grown - hardly a sign of carrot fly on them! Carrot fly can supposedly smell carrots from a mile or more away ( not sure I believe that......? ), and yes, garlic, onions etc. are supposed to hide the carrot smell. The method I used this year cost nothing and seemed to work - give it a try next year!
I doubt if the flies kill each other: I think the idea is that the plants mask each other's smell.
Crucially, it's essential not to spread the smell, notably when thinning - the foliage is damaged and gives off the characteristic smell. Sow thinly, thin carefully and do it on a wet day or water them all when you've finished to damp down the smell.
I grew feverfew around the edges of the carrots this year, and sprinkled chives amongst them to mask the smell. No idea if it worked coz rabbits got the lot
I am using nematodes this year ???? result it's too early to tell.
You can actually see the eggs on the surface of the soil around the tops of your seedlings.What i do is take an old toothbrush & sweep the eggs away from the seedlings & destroy them. Also, another use for your old toothbrush is good for destroying blackfly rather than using your fingers.
Charlie November that made me chuckle!!
I grow my carrots under fleece, from sowing to harvesting. every now and then I take a peep and see how they are doing, take out any weeds, but just leave them to it.
best ever! had some tonight, just as I was thinking next year I might not do any veg, getting fed up of doing it every year,but the taste!! nothing taste like home grown carrots.
why not?!!! and why not in restaurants either?!!!!
I now plant carrots inside a pallet collar and cover with fleece until the greenery pokes through , then remove the fleece so far it has worked fine
the pallet collars are like what you have for a raised bed but the soil at the bottom of the bed , hope that makes sense
tried planting with garlic and onions , works well until you harvest garlic and onions
I also plant my onion and carrot rows like Osckar and find that works.
Hotspur....fleece is useless if carrot fly is already in your soil. Nematodes then fleece. It will work. Onions and carrots side by side is how I do it. Parsley too near onions.
Your not last now Verdun