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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

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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Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

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Wednesday - May 09, 2012

From: San Antonio, TX
Region: Southwest
Topic: Diseases and Disorders, Trees
Title: Small oak tree with powdery mildew in San Antonio, TX.
Answered by: Jimmy Mills

QUESTION:

I have a small oak tree with powdery mildew. Is there anything I can do about? Will it kill the tree?

ANSWER:

Almost all landscapes have plants that become diseased with one of the powdery mildews. These two fact sheets describe the disease and its cause, and give tips for prevention and control.

Ohio State University

Colorado State University

Although the powdery mildew is unsightly, it probably won’t kill your oak tree.
 

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