RE: CULT: ?rate of increase

Linda,
According the AIS Handbook, an iris should have an increase of 3 to 5 each
year. Less than three and on a bad year you can end up with none and more
than five and it will over grow itself before three years are up. If your
increase of double is for one year due to weather, soil conditions, whatever
and other years it is with in the 3 to 5 quantities that is another story.

Vernon G. Brown
Malevil Iris Gardens
Region 17 - USDA 7
AIS,ASI,MIS,RIS,SPIS,TBIS
Lubbock, Texas 79403

How slow to increase can a seedling be and still be acceptible?  Slower
growth and increase here <sometimes> goes with tougher plants with less
disease and freeze damage susceptibility.

For example, one of the seedlings I sent to iris heaven (California
national convention)  produced about 50 rhizomes from 3 plants (assuming
no mixups).  I think that was 3 years of increase.

In my garden, it probably only doubles each year.  Is that an acceptible
rate of increase for something that is healthy in our climate?

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