hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
articles | gallery of plants | blog | tech blog | plant profiles | patents | mailing lists | top stories | links | shorturl service | tom clothier's archive0
Gallery of Plants
Tech Blog
Plant Profiles
Mailing Lists
    Search ALL lists
    Search help
    Subscription info
Top Stories
sHORTurl service
Tom Clothier's Archive
 Top Stories
New Trillium species discovered

Disease could hit Britain's trees hard

Ten of the best snowdrop cultivars

Plant protein database helps identify plant gene functions

Dendroclimatologists record history through trees

Potato beetle could be thwarted through gene manipulation

Hawaii expands coffee farm quarantine

Study explains flower petal loss

RSS story archive

CULT: Iris Borer

I wouldn't have believed it had I not seen it with my own eyes. 
Here in Phoenix, we do not get iris borers, and I had never seen one in my life except for pictures.
Well, this morning I went outside to notice the fan of one of my favorite irises SCOONCHIE (Desantis '98) was laying over on the ground.  The center leaf was munched on by something, and I thought to myself, "I have an IRIS BORER!!!" 
I pulled the leaves gently and they came clean away from the rhizome, rotted where it had been attached.  I thought I had better pull the rhizome.
I got a spade and lifted it out, and sure enough, along the top of the rhizome was a canal that led to a catapillar like thing - but it did not look like the borer that is pictured in The Gardener's Iris Book , by Bill Shear - page 55 in the edition I have.
This one was similar in appearance, except for the color.  Instead of being pinkish-white, this one was clearly a dark grey color, with a black head.  I might even go so far as to say it was grey with slight green, and the body was not as segmented as the picture in the book - for it was more smooth. 
Of course I wondered how it got there, but I did purchase many irises from outside my own state this year, a thing I had never before done. 
All the irises I planted were trimmed and shaved, and I took a brush to them to remove as much dirt as possible.  They were all allowed to dry for a minimum of two weeks - but much of them were drying much longer.  SCOONCHIE was out of the ground two months.
My questions are:
If what I found chomping on the rhizome is NOT a borer, then what is it?  Do borers come in different colors? Could a borer egg survive the trip to Phoenix and hatch here and survive until planted?  Could the different climate, soil, and AZ grown rhizome give the borer a different appearance?
Any info would be helpful...In the mean time, the rhizome is drying, tomorrow I will cut off the rot, soak in bleach solution, and allow to dry three days and then replant. Only 10-20% was eaten, and there are three pups coming out of the sides. It is still 90 degrees here during the day - so not too late to plant irises I hope.
Patrick Orr
Zone 9 Region 15

 © 1995-2017 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index