Re: SPEC: I. cretensis
From: Gerry Snyder <gcsnyd@loop.com>
Dennis Kramb wrote:
>
> I got my Iris cretensis last year when I went to Greece. I've never seen
> it for sale in the USA but it is closely related to Iris unguicularis which
> is available from time to time. Both of them are winter bloomers. They
> are hardy to about Zone 9 or 10, so up here you have to grow them in
> containers and bring them indoors when it gets down to about 20 deg F.
> They definitely need cold weather to get them to bloom. I'd say they need
> at least 4-8 weeks of near freezing temps...maybe even more?
I. unguicularis, at least, does not need nearly that much chilling. It's
been blooming here for over a month (almost 2 months, as I remember).
The low temperatures at the start of blooming were in the upper 40's or
so.
The length of sunlight may be more important than T.
Gerry
--
g*@loop.com
Gerry Snyder, AIS Symposium Chair
Region 15 Ass't RVP, JT Chair
Member San Fernando Valley, Southern California Iris Societies
in warm, winterless Los Angeles
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