Re: CULT:Arils in pots (I. korolkowii)

Anyone ever use Turface as a medium for growing oncos?

Brian Radford    
Jackson, MI    
Z5
  ----- Original Message ----- 
  From: Juri Pirogov 
  To: iris-talk@yahoogroups.com 
  Sent: Thursday, October 18, 2001 5:34 PM
  Subject: Re: [iris-talk] CULT:Arils in pots (I. korolkowii)



  ----- Original Message -----
  From: Bill Shear <wshear@hsc.edu>
  To: IRIS <iris-talk@yahoogroups.com>
  Sent: Wednesday, October 10, 2001 7:46 PM
  Subject: Re: [iris-talk] CULT:Arils in pots


  > >> Last year I bought two pure onco hybrids from Van Bourgondiens.  The
  > >> rhizomes were nice ones, but didn't look like they would bloom.  I
  planted
  > >> them in deep 8" clay pots, in an organic soil lightened with plenty of
  > >> perlite and much added lime.  Despite freezing solid (and shattering
  the
  > >> pots) over the winter, they stayed green and one even bloomed.  There
  was
  > >> good growth and increase over the summer.  Dried out completely
  starting
  > > in
  > >> early August, they never went completely dormant.
  > >>
  > >> Ten days ago I repotted them in new soil just like that described above
  > > and
  > >> watered lightly.  Already I have fat green shoots appearing above
  ground
  > > and
  > >> the rhizomes appear to be solidly rooted.
  > >>
  > >> Hoping for good bloom in the spring.
  > >>
  > >> What's your experience with potted arils in cold climates?  I find that
  > > cold
  > >> is not really a problem for most, but providing excellent drainage, a
  limy
  > >> soil, and a summer dry spell are the key factors.
  > >
  > Yes--I doubt that our acid clay soil or rainy summers would be to their
  > liking.  Oncos grow mostly during the winter and spring and rapidly die
  back
  > after blooming--at least that is the usual case and what I expected.
  > However, these varieties stayed green much longer, even though I
  restricted
  > water in the summer months.  I didn't finally dry them out until August,
  and
  > even then they kept remnants of foliage right up until they were repotted.
  > This might be because they were hybrids and had been already selected for
  > ease of culture.  I suspect they were imported from Israel (see the
  picture
  > on p. 15 of my book).
  >
  > The bottom line is that I potted them up so I could use appropriate soil
  mix
  > and so I could control watering.
  >
  > Bill S.

  I planted Iris paradoxa collected in Armenia in a cold frame here near
  Moscow (USDA zone near 4). I mount plastic cover on the frame in the mid May
  and remove it in the mid October. From October until May Iris paradoxa stay
  at open ground, under snow cover in the winter. I plant this onco specie in
  ordinary garden acid clay soil, but adding a lime on top. Plants bloom in
  June, stay green all the Summer, but dormant in August-September.

  Juri Pirogov
  Moscow, Russia


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