{Disarmed} Re: borer at this time of year?


Even in Ottawa we see two separate flushes of borer activity.  I see the first instar and fourth instar at the same time (early July).
 
It makes them very difficult to control by non-chemical means.  I can catch most of the first 'crop' in the leaves, but, due to the subsequent growth of the iris, the second is much more problematic.
 
Regards,
 
Sandy Ives in Ottawa.
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