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Q. Who is Mr. Smarty Plants?

A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.

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Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

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Saturday - January 15, 2011

From: La Honda, CA
Region: California
Topic: Deer Resistant
Title: Deer resistance of non-native photinia from La Honda CA
Answered by: Barbara Medford

QUESTION:

Is photinia deer resistant?

ANSWER:

Not particularly. In a difficult year, deer will eat your shoestrings if you don't keep moving. Among the other things that photinia is not are: native to North America, and resistant to diseases. From a previous Mr. Smarty Plants answer, here is more information on the photinia:

The red-tip photinia is non-native to North America, originating in the Far East. At the Lady Bird Johnson Wildflower Center, we are committed to the planting, protection and propagation of plants native to North America. Native plants are recommended because they are adapted to an area's soil, rainfall, heat (or cold), and so require less water, less fertilizer, less maintenance. Unfortunately, the red tip photinia has been widely overused because it is cheap, fast-growing and the red leaves in the Spring are quite attractive.

In this Mississippi State University Extension Service Red-tip Photinia Almost Eliminated, you will likely find out more about the fungal threats to the plant. Here is a quote from this article:

"Red-tip is highly susceptible to the fungal pathogen known as Entomosporium that causes leaf spots and ultimately defoliation. The disease has all but eliminated Red-tip from the list of recommended shrubs for Southern landscapes. In fact, the disease is so widespread that one plant pathologist jokingly explained that there are two types of Red-tip, those that have the disease and those that are going to get it! So, even though newly planted Red-tip bushes may stay disease free for many years, ultimately they will succumb to the inevitable."

Cotton Root Rot is also responsible for the loss of many ornamental plants in clay soil, and photinias are especially vulnerable. This article by Lynn Rawe from the Texas A&M Home Horticulture site describes the symptoms. There is no cure.

There is no reason why you should not plant photinia; then it will have two ways to die-deer browsing or fungal diseases.

 

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