En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Rose canker in roses on cedar posts

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

Thursday - May 24, 2007

From: Dripping Springs, TX
Region: Southwest
Topic: Diseases and Disorders
Title: Rose canker in roses on cedar posts
Answered by: Joe Marcus

QUESTION:

While visiting the wildflower Center I saw that some of the plants were growing on trellis' made of posts cut from cedar trees. I made a trellis for my climbing rose bush and where the stems touched, turned black and the rose also turned black. Are there only a certain kind of plants that can climb my cedar trellis?

ANSWER:

It is likely that your roses were attacked by a fungal disease which gained entry through contact wounds caused by rubbing against the rough cedar bark. The likeliest candidate would be a disease called rose canker. Many roses, especially the non-native ones, are susceptible to a host of diseases. Pruning out diseased canes and using good cultural practices may be all that is required to rejuvenate your rose.
 

More Diseases and Disorders Questions

Problems with Escarpment black cherry from Ponder TX
February 11, 2011 - I have an escarpment black cherry that is about three years old and about 9 feet tall. It was healthy until this last summer when its began to bark peel and sap run out at the base of the tree. The af...
view the full question and answer

Mice eating seeds put out for birds
June 02, 2008 - I love feeding the wild birds and put out seed in our backyard. Now, I have a family of mice eating the seed and they are living in the trunk of our elm tree! How can I get rid of them without killi...
view the full question and answer

Growth on top of Echinacea purpurea (Eastern purple coneflower)
July 03, 2012 - I grow purple coneflowers in my garden. ONE plant has something growing on the top of each cone. I would like to know what it is but I don't see how I can add a photo to this post.
view the full question and answer

Problems with maple in Denver
June 09, 2011 - I live in Denver, CO and planted an Autumn Blaze maple three years ago. It has done very well until about a week ago. The leaves are drying out and falling off and earlier today I noticed some bugs ...
view the full question and answer

Problems with Crape Myrtles in Oklahoma.
April 12, 2009 - I planted Crape Myrtles,Catawba, that are about 4 feet high. I planted them last October. They all had new leaves on them a week ago. All of the leaves are now brown and shriveled up. There is a t...
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