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Contact: Dohee Kim (323) 260-3880, deekim@ucdavis.edu

How to replace or save your wind-damaged tree

December 6, 2011

The recent strong winds in Southern California caused serious damage to trees in many urban gardens and landscapes. Urban trees are particularly sensitive to damage because they typically have very reduced root systems that have been cut frequently or modified in other ways to prevent or alleviate root-damaged sidewalks, gutters, curbs, driveways and other forms of hardscape.

Also, the recession has brought about circumstances in which many people and municipalities were forced to reduce or eliminate regular tree pruning and maintenance efforts. As a result, many trees developed full, dense canopies that have made them more prone to wind damage. Depending on the amount of damage, the affected trees can be saved or replaced.

Replacing a tree: A tree that has sustained serious damages from the recent storms can be replaced. Serious damages include broken or fallen trunk or main branches, causing significant or irreparable damage to the tree's overall form and structure. In such a case, it is best to remove the tree, and if desired, replant with a new one that is appropriate for the site.

Selecting the proper tree for the right spot in the garden or landscape and planting it correctly are critical in attaining long-term, optimal performance and value.

Saving a tree: A tree that has sustained only minor damages can be retained. Minor damages include broken or fallen small branches, which do not affect significantly the tree's overall form and structure. Typically, proper pruning can save the tree.

The following is a list of great online resources for replacing or pruning and saving your tree:

UC Center for Landscape and Urban Horticulture's web pages: Tree Care and Management
and Plant Selection
UC Cooperative Extension's Garden Information Series

In addition, please consider speaking to a certified arborist (International Society of Arboriculture) or nursery staff member at your local garden center. Books that provide useful information include the "California Master Gardener Handbook" and the "Sunset Western Garden Book."

For more information, please contact the LA County Master Gardener helpline at (323) 260-3238, mglosangeleshelpline@ucdavis.edu, and for more information on other local UC Cooperative Extension programs, please click here.