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Pruning Alders


 
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earnies magic boots
Rank attained: Hazel Tree
Rank attained: Hazel Tree


Joined: 26 Jan 2010
Posts: 11
Location: NorthWest

PostPosted: Tue Mar 02, 2010 3:49 pm    Post subject: Pruning Alders Reply with quote

I have a row of 18 Alder trees (alnus cordata) which were planted two years ago and are really thriving. The trees are approx. 5 years old now. I have been careful to loosen the straps on a monthly basis or whenever required to stop any "biting".
I am wondering whether it is a good or bad idea to prune the lower branches of the trees - the ones all below 4 foot for example. Does it harm the tree/expose it to diseases??
Also, I plan to top them all - I'm hoping I can prune 3 foot off the tops to encourage side growth. We have a distant mountain view which we want to appreciate.

any advice or ideas appreciated.
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michael brenock
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Joined: 12 Aug 2008
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PostPosted: Tue Mar 02, 2010 8:29 pm    Post subject: Reply with quote

alnus cordata is able to tolerate quite severe pruning back and benefits by so doing. I have never come across any disease resulting from severe cutting. Topping the trees occasionally will make them spread more and this will not block out the view as much.
michael brenock horticultural advisor (retired)
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