Re: Frost/freeze tolerance

No problem at all.  It's not really on any significant time restraint.  I also have more to add to my list as it is apparent more of them had damamge than just their stalks.  The next few days will tell me if the buds in their sheaths made it or not.  I did figure as mentioned earlier that what the plants look like about three weeks after such a freeze would be a good indication.  If your weather has been dreary and/or cold it may take longer to assess.

Are you saying you "lost" stalks/buds or the plant from the freezing?

Of course if a whole plant was lost or significantly damaged enough to cause serious rot (or loss of the fans) that would be a good thing to know and record and would be something different to consider.  I would consider that an absolute freeze tolerance...  all or nothing.


Paul Archer
Raleigh, NC


-----Original Message-----
>From: little bit <littlebit63_38024@yahoo.com>
>Sent: Apr 10, 2007 9:41 AM
>To: iris@hort.net
>Subject: Re: [iris] Frost/freeze tolerance
>
> If it isn't raining this afternoon, I will be more
>than happy to help with this. I didn't feel well
>yesterday so I didn't do more than a quick stroll
>through the beds. Of course if it is raining I will
>still help but it may take a couple of days to get the
>report. 
>  I do know..
> Northwest TN
> Our lowest temp was 25
> Two nights of below freezing temps.
>
> Lost
>  Daughter of Stars
>  Navy Blues
>  Day Dreaming
>  Captive
>   
>
> Right now Pop Art is trying to open. This bloom was
>covered for several days with a bucket. It doesn't
>look bad at all.
>
>
>--- pharcher@mindspring.com wrote:
>
>> So as we all go through our gardens and survey the
>> recent freeze damage I got to thinking.  It might be
>> useful to the general gardener and breeders to know
>> what varieties have potential for tolerance to frost
>> and freezing.  Obviously this round of freezing
>> applies only to the early bloomers and rebloomers.
>> 
>> I would be willing to keep a list of such
>> observations assuming someone else isn't already
>> doing so or wants me to take it over (haha). 
>> 
>> Going thruogh my garden I observed stalk and bud in
>> sheath damage.  Most of the stalk damage generally
>> occured on plants whose stalk tissue had emerged
>> from the sheath.  some had absolutely no stalk damge
>> and even less had any bud damage.  What I think
>> would be beneficial is to know what varieties have
>> very little or no stalk damage and just how cold it
>> got outside.
>> 
>> So all it would involve is going out the the garden
>> and observing what varieties survived and will bloom
>> fairly normally and the actual overnight temp for
>> how many days.
>> 
>> We dedicated growers are already going out to the
>> garden to observe the damage.  It might simply a
>> matter of writing down the details.
>> 
>> Might it also be worthwhile to note which ones did
>> not make it?  Too much work?  Feedback please????
>> 
>> Here is my list as an example
>> 
>> 
>> 
>> Lowest overnight temp: 27 F
>> Number of days below freezing: 4
>> 
>> Undamaged stalks:
>> 
>> Rosalie Figge
>> Rose Princess
>> Doubleday
>> 2 Halston seedlings
>> 4 Good Show seedlings
>> 
>> Damaged: 
>> 
>> Golden Immortal
>> Lip service
>> Champaign Frost
>> Navajo Jewel
>> Smoldering Fire 
>> City Lights
>> 
>> 
>> 
>> Paul Archer
>> Raleigh, NC
>> 
>>
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>
>
> 
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