Re: Bearded Irises

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Maturity is measured as number of mature leaves. You may need to count 'leaf rings' on rhizome to get total. Usually in 10-15 leaves.

Bud set temperature seems to be in range of 15-21C minimum temperature for 5-6 days in a row.

Vernalization should be around 720 chill hours. Some cultivars are as low as 460.

Chuck Chapman

-----Original Message-----
From: 'Mark A. Cook' hemerocallis1962@gmail.com [iris-species] <iris-species@yahoogroups.com>
To: iris-species <iris-species@yahoogroups.com>
Sent: Fri, Feb 5, 2016 12:33 pm
Subject: Re: [iris-species] Bearded Irises

Chuck,
What temperatures would be needed for this to happen?

Mark A. Cook

On 2/5/2016 12:28 PM, Chuck Chapman irischapman@aim.com [iris-species]
wrote:
> For a bearded iris to bloom
> 1) grow to maturity level
> 2) get bud set (specific temperatures after maturity)
> 3 vernalization., after bud set.
>
> Chuck Chapman
>

--
Mark A. Cook
AHS Region 12 USDA Zone 8b
Dunnellon, Florida USA