Re: MED: MDB Bloom Season
- To: <iris-talk@onelist.com>
- Subject: Re: MED: MDB Bloom Season
- From: J* a* C* W*
- Date: Thu, 22 Apr 1999 21:49:07 -0600
From: "Jeff and Carolyn Walters" <jcwalters@bridgernet.com>
Anner Whitehead wrote:
> I'm inclined to think that rather than attempting to identify a priori
> individual cultivars which would serve in this capacity, it might be
valuable
> to assemble information on many named cultivars--whatever people
> reported--break it down into size categories and then subcategorize them
by
> registered bloom time. From this information, assembled over two or
three
> years, the names of indicator irises might declare themselves.
Taking a cue from Anner's suggestion, I calculated the median date of
bloom
(in the statistical sense) of each of the classes of iris I grow for the
past three years. The "median date of bloom" for a given year is the date
on which one-half of all the cultivars to bloom in each class have opened
their first bloom. The results are as follows:
MDB SDB IB AB MTB TB/BB SIB SPU
1996: 4/29 5/11 5/15 5/22 5/27 6/4 6/15 6/19
1997: 5/6 5/15 5/18 5/20 5/17 5/31 6/5 6/21
1998: 4/28 5/16 5/20 5/27 5/22 6/2 6/15 7/4
Among IB's DARK WATERS and FIREBUG and among TB's HONKY TONK BLUES and
OUTRAGEOUS FORTUNE seemed to be good indicators ("bellweathers") of these
dates for their class. I am probably not gtowing enough cultivars in the
other classes to be able to pick out the bellweathers.
Jeff Walters in northern Utah (USDA Zone 4/5, Sunset Zone 2)
jcwalters@bridgernet.com
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