Evolving carrot flies

I grew early nantes carrots in a plastic tub early this season very successfully, so spurred on by that I planted French sphericals in the green planter below. I understand that carrot fly are not great flyers, but that planter is 22 inches off the ground, and the devils got at 'em!
The other planter was manufactured for next season, but I'm thinking I'll need higher sides on it!

24" is usually the recommended minimum, don't forget they can glide on a strong wind.

Fleece or Enviromesh is more effective.

Fleece covered hinged lid on the sketch pad tomorrow!

The only thing about a fixed lid of fleece is that it probably won't be sufficiently flexible to allow the carrot foliage to grow upwards.  Make sure there's enough room for the foliage.

The only thing about a fixed lid of fleece is that it probably won't be sufficiently flexible to allow the carrot foliage to grow upwards.  Make sure there's enough room for the foliage.

I reckon a foot high straight sided with hinges and catch! All recycled material, of course!

Very good idea, AF. That should keep the beasties out.