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My purple crown locust has never bloomed in the 5 years that I've had it and the past two years in the summer whole branches of leaves are dying off. Should I remove it and start over?

Answer(s)

A

Purple Robe or Purple Crown Locust are highly susceptible to locust borer, and that is probably what is affecting the branches and leaves dying off. I know in certain nurseries,  survival rates for locust trees run about 10%, that is one out of every 10 trees even make it to retail nursery for sale. Link to USU publication on locust borer http://extension.usu.edu/files/publications/factsheet/locust-borers02.pdf

If you start over, I would not recommend another species of tree.  Go to USU TreeBrowser, an online tool to help you select trees suitable for Utah.  Go to http://www.treebrowser.org/
 

Posted on 14 May 2009

Maggie Shao
Horticulture Agent, Salt Lake County

Answer(s)

A

Purple Robe or Purple Crown Locust are highly susceptible to locust borer, and that is probably what is affecting the branches and leaves dying off. I know in certain nurseries,  survival rates for locust trees run about 10%, that is one out of every 10 trees even make it to retail nursery for sale. Link to USU publication on locust borer http://extension.usu.edu/files/publications/factsheet/locust-borers02.pdf

If you start over, I would not recommend another species of tree.  Go to USU TreeBrowser, an online tool to help you select trees suitable for Utah.  Go to http://www.treebrowser.org/
 

Posted on 14 May 2009

Maggie Shao
Horticulture Agent, Salt Lake County

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