CULT: TB selection pressure

Hi list mates,

While digging a group of TB iris last week, I noticed how much more deep purple coloring there was at the base of the leaves than the last time I dug them, 3 years ago.  The coloration extends up about 3-4 inches from the rhizomes. That got me to thinking about my cultural practices.  Because I like the deeply colored leaves, I tend to select the ones that are the most brightly colored for replanting if all other factors are equal with regard to size and health of the rhizomes that are to be kept.  I wonder if I am exerting enough selection pressure to actually change this variety in a significant way.  Has there ever been any discussion on this list about regional differences within a particular variety brought about by personal preferences when it comes to selecting rhizomes to replant?

Janet in Denmark,  WI    USDA zone 4


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