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

Monday - May 04, 2009

From: Boston, MA
Region: Northeast
Topic: Shrubs
Title: Identifcation of strange orange growth on shrubs
Answered by: Nan Hampton

QUESTION:

I have found a strange orange ball shape with softer spikes about 1-2 in. growing from it on my shrubs, they grow around the branch. I believe they are Yews. I have never seen them before but now there are 2 baseball sized ones and a few starting. The bush was trimmed a week ago but they are growing a few inches into the bush. I do have a few pictures. PS they are located in Cape Cod MA

ANSWER:

This sounds like the fungal disease Cedar-Apple Rust (Gymnosporangium juniperi-virginianae) that is a serious problem for apples since it can defoliate the tree and affect fruit quality, but causes few problems for junipers and cedars except cosmetic ones. The orange structures with spikes are called telia and occur only on the cedars/junipers and produce spores that infect the apple host.  The spores produced on the leaves of the apple infect the cedars/junipers.  Here are more photos and information from Oklahoma State University, Colorado State University, and Cornell University.

If this is not what you found on your tree, please send us your photos and we will do our best to identify these growths.  Visit Mr. Smarty Plants' Plant Identification page to read instructions on submitting photos.

 

More Shrubs Questions

Failure of hybridized red hollies to grow
April 17, 2008 - I have 2 red hollies planted in my yard about 20' apart, 3 years now. They won't grow. Do I need to have a male with them?
view the full question and answer

Narrow, evergreen shrub for privacy
December 28, 2008 - I live in San Antonio and my backyard is all driveway except for a 2-3' space in front of a 6 ft chain fence. I'd like to find an evergreen narrow shrub for privacy. Would Nandina be a good choice?...
view the full question and answer

Living blooming plants for November wedding in Austin
April 07, 2014 - I am an environmental educator whose daughter is getting married in Austin in November. I would like to use living blooming native plants as decorations and then donate them to a local school to plan...
view the full question and answer

Transplanting large Silverado Sage bushes from Mesa AZ
August 19, 2013 - We just bought a condo with three Silverado Sage, each one is 6-8 ft tall, trained to grow as "trees" with bare branches for the bottom 4 feet or so, and beautiful flowering branches on top. They ar...
view the full question and answer

Identification of Tacoma stans or Yellow Bells
September 05, 2006 - We have seen a plant along the freeway here in Round Rock...beautiful greens leaves and the most amazing yellow flowers. Someone told us it was an esperanza plant and drought tolerate; however, I can...
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