Re: loss of color

Can be several different factors. Soil ph can affect color, nutrition although less likely, can fade iris, temperature (usually hot) can fade iris and chemical herbicides can wash out color and distort blooms. Round-up is usually the culprit with herbicides however other herbicides can wash out color as well. hope that helps. 
Mike Sutton
----- Original Message ----- From: "Ed Grentz" <emmett113@comcast.net> 
To: <iris@hort.net>
Sent: Thursday, May 22, 2008 6:58 AM
Subject: [iris] loss of color



Do anyone know anything about loss of color in German Bearded Iris.

For years I have had masses of very vigorous dark purple iris along with
other colors but the purple were the most vigorous.
This year the clumps are huge and covered with lots of flower stalks but as the flowers unfurl I see that they are all a pale grey blue color instead of 
the stunning dark purple they were.
I have searched online but I have not been able to find anything about loss 
of color.

Any ideas?

Thanks,

ED GRENTZ

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