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

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

Recovery of water-stressed Agarita
August 11, 2014 - Hello! I planted a small agarita at the end of May and then left town for six weeks. During that time it was supposed to receive weekly deep irrigations to help it establish, but it seems that som...
view the full question and answer

Cottony infestation on Turk's Cap in Austin
July 05, 2010 - The Turks Cap in my front planter is well-established and, overall, happy and blooming. However, some of the top leaves, those in the most shaded area, have what looks like a thin, loose layer of cot...
view the full question and answer

Dying branches on Texas Mountain Laurel from Kempner TX
September 14, 2012 - The branches on my Texas Mountain Laurel are very dry and brittle. The leaves are also starting to die. The tree has been in my yard for six years and prior to that it sat wrapped in burlap for ov...
view the full question and answer

Redbud leaves turning yellow in mid-summer
July 13, 2012 - The leaves on our redbud trees are turning yellow. The yellow leaves are pale with no other spots and no dark veins. I don't know for sure which variety of redbud they are or how old they are (more t...
view the full question and answer

Recently planted Monterey Oaks doing poorly in Jourdanton, TX.
September 02, 2013 - We planted 2 nice size Monterrey oak trees in April .they were doing good with new growth on them. But now I have been noticing the leaves are turning brown around the edges. We water about once a wee...
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