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Re: [iris] Re: REB: climate (was reverse stripes on iris-photos

  • Subject: Re: [iris] Re: REB: climate (was reverse stripes on iris-photos
  • From: "Mike Sutton" <suttons@lightspeed.net>
  • Date: Tue, 3 Aug 2004 14:02:38 -0700

Here iris are in raised rows and are flood irrigated every three weeks.
that would be considered a deep watering.  in our garden it seems that if
rebloomers have adequate nutrition and sufficient moisture over the summer
they will rebloom.  in fresh soil a sporadic or even non-rebloomer can have
rebloom with adequate water.  this year we have had strong rebloom on
several of our intros that did not rebloom before, primarily because they
were in lousy, sandy, dry soil. Return To Bayberry and Winning Streak
weren't registered as rebloomers but both have had bloom every month since
April this year.  finally are in good soil and well taken care of.  Golden
Immortal is fertile but tough in the summer months.  (as are most flowers).
We have a whole host of rebloomers blooming right now, a few of the newer
ones are:

Honk Your Horn
Durham Dream
Bernice's Legacy
Midnight Thunder
Berry Ripple
Lord of Rings
Snow Melt
Grace Kelly

Porterville, CA USA
USDA zone 8b
90 degrees

----- Original Message ----- 
From: "Char Randall" <charandmike@juno.com>
To: <iris@hort.net>
Sent: Tuesday, August 03, 2004 10:25 AM
Subject: Re: [iris] Re: REB: climate (was reverse stripes on iris-photos

> On Tue, 03 Aug 2004 11:49:35 -0400 Linda Mann <lmann@volfirst.net>
> writes:
> > I see a bit of rebloom> during the hot summer, but things don't really
> pick up until we get
> > cooler nights and drier temps.  It seems like a cool night (below
> > 60oF)> in August will usually result in bloom a month to 6 weeks later,
> > but that just my impression (no data).
> >
> > I asked Mike about night time air and soil temperatures,
> > And I don't think Mike knew what soil temperatures are.  Or maybe......
> >
> Linda, sounds like an interesting thread on another list but the subject
> line indicates it might be difficult to try to follow now! I'd like to
> add a few thoughts for consideration. I think "dry" is the key. Rebloom
> here for me seems to follow the dry and slow growth cycle of the hot
> summer, followed by a thundershower or a deep, slow flood irrigation
> watering. Like many desert plants, I think my iris have shut down active
> growth and are at a "maintain" level, not dormant tho, and then the rain
> or irrigation triggers the regrowth and rebloom cycle. Kind of like lilac
> or some bulbs needing winter cool to trigger spring bloom?  Who
> knows....maybe its the shock value of the lightening and thunder!!!  Do
> you know what kind of supplemental watering Mike uses? and how often?
> Whatever the cycle is, and what starts it is interesting isn't it?
> BTW Golden Immortal has three really fine bloom stalks and pretty flowers
> shining outside in full sun in triple digit heat! The blooms are holding
> up very well for these temps. Is this TB fertile?
> Char Randall
> Melba, Idaho
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