carrots and root fly

Remember that gloriously sunny week we had in mid February?  Well in a burst of optimism that spring had arrived early I sowed some carrots.  I also sowed onions (spring ones I think) in the same container and covered them in fleece and positioned them in the car port.  A few onions started to germinate so I took the fleece off.  When I got back from being away for a few days there were loads more but a quick google search showed they are probably carrots not onions! 

So, do I put the fleece back on to protect from root fly, or are root fly unlikely to find them if they are not in a garden?

They just have the seed leaves at the moment

Thanks

Try to plant them off the ground.

Carrot root fly cant fly higher than about 24 inches I believe.

And Jay is correct, Carrots have leaves that are like ferns and Onions, dont really even have any leaves, just a long pointy thing.

Indeed Grannie.

I had a funny 5 minutes O_o

It's a complete myth that root fly don't go higher than about 24 inches!

I've had carrots in containers on a bench where the fly would have to be well over 4 feet above the ground and still suffered bad attacks. The only way to protect against the fly is fleece or enviromesh. And don't bother with the supposed fly-resistant varieties. They might not be attacked as badly but they'll still be attacked.

...The only way to protect against the fly is fleece or enviromesh....

How well does fleece work compared to enviromesh?  I've got an abundance of fleece but very little enviromesh so would be up for trying the fleece if its effective.

Thanks for all the advice

I covered it with fleece yesterday so fingers crossed!