I live in Glendora CA 91741, I am looking for a CA native non -deciduous medium size tree to provide shade in the front yard. I was thinking of monterey cypress; any suggestions and place to buy the 5 gallon type?
The native range of Cupressus macrocarpa (Monterey cypress) is north of Los Angeles County. However, it has been planted in warm climates worldwide and has become naturalized from central California to Washington along the coast. You should note, however, the "Conditions Comments" on our Native Plant Database page that says: "Tremendously susceptible to a canker that kills the tree, especially if it is planted away from cool, coastal breezes." Here is more information from Conifer.org and here is what Las Pilitas Nursery says about them. Since Glendora is well away from the coast and its "cool, coastal breezes", I am doubtful that Monterey cypress will be a successful tree for your site.
Here are some other possibilities that you might consider:
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