[CANUFNET] How big a tree can be moved? (Without killing it that is)

[David Stevenson]

Hello All,

I have been receiving conflicting information about the size of tree that can be successfully moved with a tree spade. I have heard anywhere from 18" dbh (from a contractor who wants to move the trees) to 5" dbh (from a developer who doesn't want to pay to move them). While there is no point in moving trees that are going to just give up the ghost, there must be some diameter above which the success rate drops off unacceptably. Just wondering if anyone has any experience in the matter.

The trees in question are predominantly Colorado Blue Spruce planted ~20 years ago from nursery stock. They range in dbh from 7-11" and 5-7m in height.

Does anyone have any information about the successful moving of large caliper trees or know of anyone or anywhere I can find this information? 

Cheers,

David Stevenson, MScF, RPF
ConsultingForester,
KBMForestry Consultants Inc.
807345-5445 x239





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