En Español

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

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

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

Agarita and Mexican Buckeye not flowering or fruiting.
December 11, 2012 - The Greenbelt behind our home has a ton of agarita and Mexican buckeye, but they never bloom or berry. The pigeon berry is very happily doing both all year. Any suggestions for helping the agerita a...
view the full question and answer

Butterfly bushes and weed killer in Pueblo West CO
August 27, 2011 - I have 3 previously healthy butterfly bushes that have one by one developed masses of tiny yellowish-green compact leaves. The entire bush went from its normal healthy appearance to something that res...
view the full question and answer

Live oaks dropping brown leaves
August 02, 2014 - We have three live oaks and one of them has been dropping quite a few brown leaves over the past two weeks. I looked at pictures of trees with oak wilt and ours do not look like the pictures. I als...
view the full question and answer

Soapberry Transplant shock symptoms
July 21, 2006 - Please suggest a cause & cure for general yellowing of the leaves of Western Soapberry when planted in the ground 20 miles NW of Austin (thin, poor clay over limestone). Trees still in containers are...
view the full question and answer

Repair of broken branch stump on pecan tree
July 18, 2007 - Hi Mr. Smarty Plants, big fan. Recently one of my pecan trees had a large branch break off, about 4 or 5 inches in diameter. The strange part was there was no clear sign of what caused the damage, i...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | JOBS | SITEMAP | STAFF INTRANET
© 2016 Lady Bird Johnson Wildflower Center