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nafex - [NAFEX] winter, or spring hardiness of apricots

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  • From: Alan Haigh <alandhaigh@gmail.com>
  • To: nafex@lists.ibiblio.org
  • Subject: [NAFEX] winter, or spring hardiness of apricots
  • Date: Tue, 12 May 2009 11:04:30 -0400

I'm been growing most of the Harrow series of apricots for almost 20 years in the Northeast from Z 5A to 6B.  Can't figure out what makes apricots tick, or stop ticking.  All I know is they are fragile and unpredictable.  Sometimes they survive our worst winters only to die after a relatively minor one.  I have some understanding of the physiology of hardening off and I find no explanation related to that.
 
I used to think it was the early spring cold that killed them, just as they come out of dormancy but I've got a couple of dead ones in different sites this season, one of them very close to the Hudson river where it is very wide and temperature almost never get below zero, so presumably any sudden drops in temp would be moderated.  We had no unusually precipitous drops in early spring or winter this year.  Both trees went into dormancy in beautiful shape by all visual evidence and the weather was fine as the growing season closed.
 
One thing I've learned is planting them by a south wall doesn't help and only makes them more tender.  Same with east walls- haven't tried west.



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