I. aphylla are unique in that they have a short day photoperiod induced
endodormancy. They don't come out of dormancy without proper
vernalization over winter.
I pulled one out of garden, after it went dormant. Kept it under lights
inside, and it just sat there all winter. Put it back outside in
spring. It remained in dormancy, but eventually just died.
Chuck Chapman
-----Original Message-----
From: 'Robert Pries ' robertpries@embarqmail.com [iris-species]
<iris-species@yahoogroups.com>
To: iris-species <iris-species@yahoogroups.com>
Sent: Fri, May 8, 2015 9:20 am
Subject: Re: [iris-species] Re: HYB: long chill requirements?
Â
I agree probably with all that has been said. I do not think long
chilling temperatures are necessarily the key. I am fairly certain it
is more complex and not definitely cold dependent. I grew aphylla in St
Louis and now in North Carolina. In NC I am zone 7. Aphylla blooms here
but I can not say yet that it is reliable but no less so than in St
Louis with zone 5. Its tendencies for rebloom make it valuable for
hybridizing rebloomers. Years ago I grew iris timofejewii in St Louis
and the first year it bloomed but the second year despite a cold winter
it never started into growth. it just sat there until finally in summer
it rotted. Aphylla comes out late in spring so perhaps the more
important factor is cold or heat at the time it initiates growth.
----- Original Message -----
From: "gndavis@peoplepc.com [iris-species]"
<iris-species@yahoogroups.com>
To: iris-species@yahoogroups.com
Sent: Thursday, January 22, 2015 6:45:30 PM
Subject: Re: [iris-species] Re: HYB: long chill requirements?
Interesting observations from Zone 3. Thanks for more northern
information !
g.davis irisman646
----- Original Message -----
From: "Dan & Marilyn Mason demason@tbaytel.net [iris-species]"
<iris-species@yahoogroups.com>
To: <iris-species@yahoogroups.com>
Sent: Thursday, January 22, 2015 12:41 PM
Subject: Re: [iris-species] Re: HYB: long chill requirements?
>I grew aphylla seeds by planting in the ground in late Oct. or just
> before the ground froze. They always came up well in late May. But
once
> the ground freezes it stays frozen and snowcovered all winter,
here. I
> watered seedling rows during dry weather in spring until they
emerged
> and continued watering them if needed to get them established.
>
> Aphyllas I tried grew well in gravely topsoil / clay subsoil. They
> survive without cultivation for quite a few years competing with
grass
> in thin soils. I don't think aphyllas would survive on their own
in rich
> peaty clay soil at our new place. Grasses here grow 5' tall and
would
> overwhelm them.
>
> The first time I grew an old local aphylla I treated it like a pet
and
> watered it all summer. It kept growing and blooming a little the
entire
> summer until frosts / late Sept. I never watered it again and it
never
> bloomed all summer again.
>
> Aphyllas put on a good display here in late spring when
cultivated. They
> don't grow much in dry summer weather, don't flower much if left
> uncultivated.
>
> Dan Mason zone 3, NW ON, Canada
>
>
>
> ----------------------------------------------
> On 1/20/2015 11:14 AM, Paul Archer pharcher@mindspring.com
> [iris-species] wrote:
>> Both times I have tried to grow aphylla it was in silty clay
soil
>> here in Indianapolis, two different locations. They never
bloomed
>> and evenytually disappeared, not from rot but never grew
enough each
>> year to survive. They looked like they were in a dormant
stage most
>> of the growing season. One was I. aphylla 'Ostry White' the
other
>> was 'Blueberry Philly' which is half 'Ostry White' . Currently
>> growing Baumunk's 2014 Intro 'Wine Dark Sea' which is (I.
>> reichenbachii X I. aphylla), so we'll see.
>>
>> Paul
>>
>>
>>
>> -----Original Message----- From: "'aclyburn17@frontier.com'
>> aclyburn17@frontier.com [iris-species]" Sent: Jan 20, 2015
10:59 AM
>> To: "iris-species@yahoogroups.com" Subject: [iris-species] Re:
HYB:
>> long chill requirements?
>>
>> Hello Everyone! Can anyone tell me what sort of soil the
Aphylla
>> like and if they will grow in Indiana?
>>
>> (I have clay soil but can amend the heck out of it or dig a
pit and
>> refill it with lighter soil if need be.)
>>
>> Also: I read with interest what Mr. Chapman said about Aphylla
being
>> used in breeding TB's. What other species were used like this?
>> Thanks, Anita Clyburn Terre Haute, Indiana I joined SIGNA in
>> December.
>
>
> ------------------------------------
>
> ------------------------------------
>
>
> ------------------------------------
>
> Yahoo Groups Links
>
>
>
>
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Yahoo Groups Links
--
Bob Pries
Zone 7a
Roxboro, NC
(336)597-8805
