This type of pattern can appear on MAIDEN bloom only---in my experience. This means--the first bloom of a seedling. I've had some gorgeous things happen in this stage, including impossible patterns, but know to enjoy as it won't be the same in following years.
Zone 6 KY
From: AIS Janet Smith email@example.com [iris-photos] <firstname.lastname@example.org>
To: Iris-Photos <email@example.com>
Sent: Thu, Jul 31, 2014 6:30 pm
Subject: [iris-photos] Checkerboard Pattern Soft Brown and White----Iris????
A lady wrote to Prescott Area Iris Society and they forwarded it to me.
Several years ago on the campus of Fresno State University in their iris garden I saw one with a checkerboard pattern in a soft brown and white.
Weeder's Garden Club
Chandler/Sun Lakes, AZ
I never hear Dr. Weiler speak of such an iris pattern not even in his seedlings. Unfortunately the irises are long gone at Fresno State.
Anyone know of such an iris????
AIS Coordinator, Calendar, Digital Programs/Slides, Image/Photo, Photo Contest
Fresno Iris Society, Secretary 2014
P O Box 1585
Coarsegold, CA 93614-1585
559-683-0447 (home and fax)