P&PDL Picture of the Week for
December 8, 2008

Deck Girdling

Mike Mickelbart, Assistant Professor, Horticulture & Landscape Architecture, Purdue University

These photos show the damage that can occur when trees outgrow the space they’ve been allowed. This honey locust outgrew the hole in the deck around the trunk, so the deck was modified to allow the trunk to continue to grow. This tree will likely be fine, but you can see the flat areas on the trunk that occurred once the tree outgrew the hole. If this deck was not fixed, the tree would have been girdled and could pose a danger to the structures around it.

Click image to enlarge

Building a deck around a tree

Deck around tree

Tree outgrowing deck

Tree outgrowing deck close up

Purdue Plant & Pest Diagnostic Lab Purdue Cooperative Extension Service