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nafex - Re: [NAFEX] Dormant vs. summer pruning

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  • From: "tanis cuff" <tanistanis@hotmail.com>
  • To: nafex@lists.ibiblio.org
  • Subject: Re: [NAFEX] Dormant vs. summer pruning
  • Date: Tue, 01 Apr 2003 18:42:02 +0000

R Halgren,

Advice from a conservative pruner: If you remove more than 25% of live branches in the spring, the tree will vigorously try to replace them ("watersprouts"). Removing too much during summer pruning, which tends to cause a reduction in vigor, can also cause vigorous growth the next year. I recommend doing big removals as gradually as possible; and prop up the leaning tree if you have to. In the end, you'll have a better tree.

Another way to get a better tree is to find some rootstocks, if all the nurseries aren't sold out yet, grow them this year, collect scion from your poor tree next winter, graft onto the rootstocks next spring. Good clean fun, and you can give the extras away, to spread the tree's genetics around.

Tanis Cuff, s.WI

p.s. to Group : Was it Shigo who said "we can prune any time the tree's leaves are not forming nor falling" ?

From: "Robert G. Halgren" <halgren@msu.edu>
Reply-To: halgren@msu.edu,North American Fruit Explorers <nafex@lists.ibiblio.org>
To: nafex@lists.ibiblio.org
Subject: [NAFEX] Dormant vs. summer pruning
Date: Tue, 01 Apr 2003 13:19:10 -0500

Can someone explain when you would prune fruit trees (apples) while dormant as opposed summer pruning? Believe it or not, my trees are all still reasonably dormant here in central MI (well, they are greening up the cambium, but not yet budding out).

The apple trees that came with the house have not been pruned in the better part of 15 years, I'd estimate. I took a fair amount of wood out last spring (about 25%), and need to take a whole lot more. So, when is the best time to remove a large amount of wood?

And, assuming I wanted to take 3/4+ of a tree out this year, when would be the best time to do it? This one has the main trunk leaning well out over the pasture next door (at about a 45% angle, at that). The horses like it, but I'm afraid the tree is going to fall over. There is a nice upright leader coming off the main trunk (well above the graft, if there is one), and I was considering just whacking off the offending growth right there. It is pretty much all or nothing. The chainsaw is sharp...

Thanks!

--
Robert G. Halgren, Ph.D.
Bioinformatics Specialist
GTSF - Michigan State University
http://genomics.msu.edu
(517) 353-7236 - halgren@msu.edu

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