After years of fighting carrot fly to no avail, I think I've finally cracked it with a raised bed and a cover of voile (offcut from material shop). I usually only get about 2 dozen usable carrots but it looks like I've got a decent amount to fill the freezer with
(http://i2.photobucket.com/albums/y21/meatpaste/carrots.jpg)
I think that it is the raised bed that saved ours this year. I purposely didn't fleece them.
Also helps if you earth them up when foliage is about 4 - 5" high.
Wow they look fab! Mine are under fleece so fingers crossed. Last year, only 50% any good, the rest full of wigglies!
When is the risk past? I have just sown another large area of carrots, but have no fleece left! Can it wait until they have germinated, or is it not a problem as autumn approaches?
My fleece blew away - it's probably reached Poland by now, or stuck in hedge on next allotment ;D My carrots didn't need it though and were fine thank goodness. Your carrots look fine PM and I bet you're right chuffed with em :)