Re: Re:Growing Iris South Florida
iris@hort.net
  • Subject: Re: Re:Growing Iris South Florida
  • From: L* M* <1*@rewrite.hort.net>
  • Date: Thu, 06 Nov 2014 12:31:09 -0500
I was asking about the discrepancy between the map of isolines for chill hours done by University of MD which doesn't give the same result as the Utah model.
The Univ MD map shows there are chill hours for Los Angeles. The model does not.
Just wondered if you knew how the MD map was derived - I couldn't find anything about it on the web, tho several websites have the map. 

On 11/6/2014 12:13 PM, Chuck Chapman wrote:

There are no chill hours to report.  While you add for cold
temperatures, you subtract for every hour over 60F. No need to report
negative chilling hours.

Chuck Chapman

-----Original Message-----
From: Linda Mann <101l@rewrite.hort.net>
To: iris <iris@hort.net>
Sent: Thu, Nov 6, 2014 7:46 am
Subject: Re: [iris] Re:Growing Iris South Florida

I haven't done that, but I did notice that the website includes a
graphic (map) farther down the page with isolines for chill that
indicates there are some chilling hours in southern CA and none in
southeast Texas or southern FL

Oops - I just noticed that I didn't include the link to the original
website that has all the stuff about chill, including the isoline map -
it's

<http://blog.coldspringsfarmcsa.com/>



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