En EspaŅol

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.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

Share

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.

Search Smarty Plants
    
 
See a list of all Smarty Plants questions
Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.
Need help with plant identification, visit the plant identification page.
 
rate this answer
Not Yet Rated

Saturday - April 24, 2010

From: Culleoka, TN
Region: Southeast
Topic: Diseases and Disorders
Title: Juniper-apple rust galls
Answered by: Nan Hampton

QUESTION:

I have Red Cedar trees in my yard. I have just noticed something that looks like a reddish brown squid-like bloom about the size of a small orange. Is this normal or is it a fungus?

ANSWER:

This sounds like a gall caused by a fungus called cedar (or juniper) apple rust (Gymnosporangium juniperi-virginianae) that requires two hosts—the Juniperus virginiana (eastern redcedar) and an apple or crabapple tree—to complete its lifecycle.  It doesn't really cause any substantial harm to the cedar tree but can affect the fruits of the apple or crabapple and also cause leaves to fall from the trees. You can read about more control measures for the cedar apple rust from the Missouri Botanical Garden.

 

More Diseases and Disorders Questions

Saprophytic fungus on mulch
June 22, 2007 - I just did some major landscaping in my west Austin, TX backyard. I added many native plants and mulched all of the new beds. I did this just before the heavy rains in the past two weeks. I now not...
view the full question and answer

Long term effects of pesticide from Lubbock TX
March 20, 2013 - I have 9 western pecan trees about 20 years old. Trunk sizes is from 18" to 39". I used a product Bayer Tree and Shrub, applied to the trees. I wonder what it will do to the trees. I talkd to Bayer ...
view the full question and answer

Reason for die-back of native Mahonia repens
April 01, 2008 - I have several mahonia repens plants planted on my property. This is the third spring for them and I have noticed that they look like they might be dying out. The leaves have turned brown and are cu...
view the full question and answer

Mosquito repellent plant?
September 01, 2008 - I would like to know if there is a plant that keeps mosquitoes away. Thanks
view the full question and answer

Arizona Ash dropping seed pods and waste in Houston
April 08, 2010 - My Arizona Ash tree is dropping seed pods and other waste on my deck and walkway. It has never done this before in the 14 years we have had it. We did get it cut back last winter. Could this be the re...
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center