Thread: Protection against cabbage root fly
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Old 04-06-2007, 07:20 PM posted to uk.rec.gardening
Robert \(Plymouth\) Robert \(Plymouth\) is offline
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First recorded activity by GardenBanter: Feb 2007
Posts: 98
Default Protection against cabbage root fly
wrote:
: I'm sure this is a pretty common topic for discussion and I've checked
: the archives for the answer I'm looking for without success.
:
: I used up the last of my stock of granules last year (Bromothos wasn't
: it?) and as I gather there isn't a chemical replacement, decided to
: got the mechanical root and make collars from 4" squares of roofing
: felt.
:
: Can someone tell me at what point of the season I can retrieve these
: bits of felt off the plants for re-use next year. ie when does the
: risk from the flies cease?
:
: Thanks
:
: Rob

Several generations over the summer it says here
http://www.abdn.ac.uk/web/test/organ...abbage_fly.php


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