Re: Iris Dormancy
John I Jones wrote:
> I recently read in a local Iris club bulletin that if you were going to
> dig and separate an iris clump, that you should withhold water for six
> weeks to make tham go dormant. It has been my impression that irises
> (TB's at any rate) go dormant on their own regardless of watering
> pattern. True? ........ Not here. My plants are lush and sending plenty of new increases up. In fact some of the ones I transplanted a
month ago are growing wonderfully. Beardless iris - I make sure they
are wet before I dig them. I know, it can be a muddy mess, but the
transplant shock will be less.
> Another question: How deep do iris roots (TB"S) typically go, and is
> that the depth at which one should be concerned about the availability
> of moisture? I guess that is another way of asking how deep should it be
> dry before you water?
Depending on the variety, and the condition of the soil, I have had some
roots grow to over 16 inches long. In this area, they go down around
5-6 inches deep. There are usually plenty of "shallower" roots to help
them obtain moisture. I use a moisture meter in different locations to
guage when to water. I am developing a watering plan taking into
consideration rain amounts, temp. and the biggest---WIND!