iris fly?

Adam Fikso
Wed, 10 Jun 2009 10:27:38 PDT

This does not look like  typical iris borer damage which is usually confined 
to the edges of leaves early in the year--and the grubs are much 
bigger--about 4-5 cm-- which go down into the rhizome and hollow it out, at 
which point the leaves turn watery looking and rot from the inside of the 
stem outwards.  Also, Iris borer in the U.S is much earlier, about April-May 
in the Chicago area. If I had to suspect a pest from the U.S. I'd think one 
of the leaf hoppers which tend to do more surface damage to softer parts of 
the leaves between the veins.

Not iris borer from your photos , but you've got me hooked enough to check 
some other references

. ----- Original Message ----- 
From: "Carlo A. Balistrieri" <>
To: "Pacific Bulb Society" <>
Sent: Wednesday, June 10, 2009 11:43 AM
Subject: Re: [pbs] iris fly?

> Janos,
> Look up "iris borer". It's a fairly common pest encountered by people
> who grow iris. I'm surprised Adam hasn't seen it. I lived in his part
> of the country most of my life and encountered the grubs tunneling
> through leaf and rhizome.
> On Jun 10, 2009, at 12:27 PM, Adam Fikso wrote:
>> Hello Janos-  I've grown irises for more than 35 years (but in the
>> U.S.) and
>> have never seen the insect you describe, nor the kind of damage you
>> show in
>> your photo.  It may be something  new to your area or peculiar to
>> that one
>> shipment.  I think you are wise to burn the affected leaves.
> Carlo A. Balistrieri, Executive Director
> The Gardens at Turtle Point
> Tuxedo Park, NY
> 845.351.2849
> Zone 6
> visit: and its BGBlog
> coming soon: Carlo Balistrieri Photography
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