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 - October 31, 2013

From: Houston, TX
Region: Southwest
Topic: Diseases and Disorders, Herbs/Forbs
Title: Strappy leaves on rudbeckias from Houston
Answered by: Barbara Medford

QUESTION:

My Rudbeckias keep sending up odd shoots with strappy leaves on them. Should these be cut off? What is their purpose?

ANSWER:

There are 20 members of the genus Rudbeckia and family Asteraceae (aster) native to North America, 14 of which are native to Texas. Three of those are found growing natively in and around Harris County. Since we don't know which ruckbeckia you have, we will choose Rudbeckia maxima (Giant coneflower) as a representive example. Below are three pictures from our Image Gallery. The first is of the bloom, the second of the rather oval-shaped leaf and the third of slightly more "strappy" looking, longer and more slender leaves. So, it could simply be a matter of your perception of what is a properly shaped leaf for this plant.

However, if you will follow the plant link above to our webpage on this plant, you will see this line:

"It should be cut back to the base after blooming to keep tidy and be planted in mass for best effect in landscapes."

Since the plant blooms from July to September, you might as well cut all the stems back, as we recommend for most perennials, and not worry about whether to cut back the ones that you feel might be abnormal.

 

From the Image Gallery


Giant coneflower
Rudbeckia maxima

Giant coneflower
Rudbeckia maxima

Giant coneflower
Rudbeckia maxima

More Diseases and Disorders Questions

Willow woes in Philadelphia, NY
August 22, 2010 - I have a 2 yr old willow; it is August and it looks like the tree has gone dormant, is this normal?
view the full question and answer

Problems with fruit of Mexican Plum from McKinney TX
May 19, 2013 - MY Mexican plum tree (about 5 years old) has small fruit on it. Some of them are severely deformed, and look rotten almost. They are bumpy and ragged looking. Or they are pasty white,rotten and dried ...
view the full question and answer

Stress on Goldenball leadtrees from Austin
June 07, 2014 - I know of two separate instances where young Goldenball Lead Trees (leucena retusa) have shown symptoms of defoliation and a bleeding of white sap from sores that have developed on the bark. The first...
view the full question and answer

Film growing on prickly pear from Austin
September 28, 2012 - We've just xeriscaped our front & back yards. Two of the spineless prickly pear cacti have a beige film growing on the paddles. The film is now moving further up the cactus, and one of the upper pad...
view the full question and answer

Rust-colored spots on Lantana?
June 05, 2009 - Mr. Smarty Plants, I live in Cibolo TX and my lantana plants are about 3 years old. They have done exceedingly well until this spring. The leaves have developed brown, rust colored spots and the le...
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