Another question from this novice: What's the
real truth behind this phenomenon--TB varieties that (allegedly) revert to white
after a few years? I have never witnessed it myself, but the subject came
up in recent discussion with some gardening friends, so I offered to bring the
question to you, my panel of iris experts. If I understand the iris'
process of vegetative reproduction correctly, it doesn't make sense to me--how
could any increase off a mother rhizome be genetically different? Must be
that the color is expressed differently, which I suppose has to do with
cultural requirements and maybe some trace mineral being depleted in the
Either that or it's all a hoax, perpetuated by the
Burgermeister Meisterburger, who hates color and sends his police out with a bag
of white rhizomes to uproot all the colorful ones and replant them with plain
white. . .
Skaneateles, NY (near Syracuse) USDA Zone