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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: "Colleen Modra" <colleen@impressiveirises.com.au>
  • Date: Wed, 4 Aug 2004 04:35:18 +0930

We don't water our irises as much in summer as Mike does, we get most
rebloom about 6 weeks after the break in the season, i.e. when we start
getting real rain after a very hot dry summer.

Colleen Modra
Adelaide Hills
South Australia  Zone 8/9

colleen@impressiveirises.com.au
www.impressiveirises.com.au



----- Original Message ----- 
From: "Char Randall" <charandmike@juno.com>
To: <iris@hort.net>
Sent: Wednesday, August 04, 2004 2:55 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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>
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