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

Suffering Yaupon in Austin
July 14, 2012 - I am in the Austin area and I planted a Pride of Houston Yaupon in my back yard in March. It is in full sun. Lately the leaves have been turning pale green and now they fall off the tree upon touchi...
view the full question and answer

Non-fruiting squash
July 25, 2007 - With all this rain in Dallas why would our Zuchinni and Yellow squash be beautiful and green but not produce any squash?
view the full question and answer

Problems with Purple Heart in Raleigh, NC
December 24, 2014 - I was hoping you could help me with an indoor/outdoor houseplant issue. I have a purple heart, that lives outside in the summers and indoors in the winters. I brought it in a few weeks ago and am no...
view the full question and answer

Trumpet Vine Dropping Buds
July 25, 2013 - My trumpet vine is dropping its buds before flowering. This happened last year as well. Do you know what is causing this and what I can do to prevent it?
view the full question and answer

Tulip trees losing bark in OH
July 11, 2011 - We have two tulip trees in our yard that are losing their bark at the base of the trunk. I am careful with the mower keeping away from the tree when I mow. What could the problem be and what can I d...
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center