Re: "4-phase" SDB Chubby Cheeks

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Adam,

 

    Nice photos of one of my favorite SDBs, and obviously the blossoms are a result of a hit of frost at the time the bud was pushing up through the stalk.  I had 6 different SDBs in close proximity that experienced the same # of standards and falls this spring.  No other SDBs were affected.  The occurrence happened on the first bloom stalks.  The second and successive stalks, which formed a little later, were all normal.  Some years, a frost will occur as arilbreds are forming bloomstalks, and they will be the only kind of iris affected.  Two years ago, I had bloom on Stars Over Chicago (AB) with 6 falls and no standards.

 

Elm