CULT: Rhizomes completing one bloom cycle?

Hello iris-talkers,

I've been lurking and learning here for about a year,
but this is my first post.  Many of my newbie
questions have already been answered, but there are a
few that have not yet been addressed in the daily
iris-talk communications.  I only started gardening
about 5 yrs ago, and I only became seriously
interested in cultivating irises a couple of years
ago, though I always had some ancient irises
struggling to survive around the original homestead
before we knocked it down in 1996.  I've acquired many
new irises over the last 2 yrs, most of which are
different classifications of beardeds (mostly TBs).  I
also have several species irises, a few ABs, and a
dozen or so Sibs.  Many of the beardeds I added last
year are rebloomers, though I realize I'll be lucky if
any can rebloom in my zone 3b northern MN climate.  I
have joined the AIS, RIS, DIS, and HIPS.  But enough
about me.  Here is my first newbie question:

I understand that once a rhiz blooms, it will not
bloom again.  But what happens if a rhiz starts to
send up a stalk in the fall that gets zapped by frost
before it blooms?  Will that same rhiz send up another
stalk the next year (or some other year), or will it
turn its energy exclusively to the production of
increases, never having successfully completed a bloom
cycle?  Is the rhiz's likelihood of attempting a
second time to bloom dependent on the maturity of the
first stalk at the time it was frozen out (will a rhiz
be more likely to attempt a second bloom if the first
bloom attempt never got past the "pregnant fan"
stage)?

I can't tell you how much I appreciate all I have
learned from you good folks already, and I can't wait
to soak up even more!

Happy irising,

Laurie

=====
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lfandjg@yahoo.com
zone 3b - northern MN
amended clay soil

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