On 15 Feb, 10:07, "Robert" wrote:
Nick Maclaren wrote:
::: Every year my carrots have carrot root fly.
::: The ones I'm digging at the moment have to have about 30% cut out
::: and thrown away.
: Are you growing a resistant variety? I find that doing so reduces
: that to about 5%, which is acceptable.

Or try making a wooden compost filled open framework at least 18" above
ground as per the Big Dig allotment programme last year. Apparently the
blighters don't fly that high. I'll let you know later!

They're not strong flyers and an open windswept area is good. Also
plant a row of onions for one row of carrots. I use rosemary near by
and mulch the carrots so that beneficial crawlies can hide under and
eat the psila if invaded.