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Old 08-11-2005, 02:45 PM
Stephen Henning
 
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Default Roofing tar to seal oak tree wounds?

"Vinny" wrote:
I have some mature oak trees in my yard that
I had built a tree house in for my son about 6 years ago.
I've taken most it down and after I finish removing all of
the metal bolts from the trees I'm wondering what to
seal the holes with.
In the past I've heard that you can use roofing sealer
for this.


The answer is no 1) because normally sealers aren't required and 2)
because asphalt based sealers should never be used.

"Travis" wrote:
Now a days it is recommended that you do not seal wonds just let
them scar over.


The exception is to seal wounds on trees that are susceptible to
damaging insect infestation such as birch, oak, and elm trees with a
NON-asphalt based pruning sealer. However it is preferable to disturb
oak trees during the winter when the insects are not active and no
sealer is required.

Here are some references:

http://www.cahe.nmsu.edu/ces/yard/2001/021001.html [Why not use pruning
sealer? by University of New Mexico]

http://www.treehelp.com/howto/howto-prune-a-tree.asp [How to Prune a
Tree]

http://www.extension.umn.edu/extensi.../stopprun.html [Stop
pruning elm and oak trees by University of Minnesota]
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