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
1 rating

Saturday - April 03, 2010

From: Austin, TX
Region: Southwest
Topic: Non-Natives
Title: Problems with non-native hollyhock in Austin
Answered by: Barbara Medford

QUESTION:

Our hollyhocks develop small yellow spots on the leaves; these eventually spread into little swellings on the underside; I think of them as lesions. They spread and the leaf turns brown and shrivels up. Can you give me any information that would assist?

ANSWER:

There is one hollyhock native to North America, Iliamna rivularis (streambank wild hollyhock), but it does not grow in Texas. It seems more likely that what you have is Alcea rosea, Hollyhock,  thought to have originated in Asia, but now so hybridized that it is only found in cultivation, not as a wildflower. Since the Lady Bird Johnson Wildflower Center is dedicated to the use, protection and propagation of plants native not only to North America but to the area in which the plants are being grown, the cultivated form of hollyhock would be out of our area of expertise. 

Here is an article on Alcea rosea from Michigan State University Extension, which mentions the plant is subject to several diseases. 

 

More Non-Natives Questions

Trailing snapdragon hanging basket has flowers that are turning brown.
June 09, 2009 - Trailing snapdragon hanging basket in yellow, flowers are turning brown all over the plant. Why? I water every day as told & fertilized once in 3 weeks. It was so beautiful.
view the full question and answer

Care of Ecuadorian penco century plant
December 17, 2007 - I was recently given a Penco, Century plant from Ecuador. It doesn't seem to be doing well. Two of the leaves have turned dark, then yellow, and died completely. Five remain, one seems to be dying as...
view the full question and answer

Insects in non-native weeping willow
September 17, 2008 - My weeping willow is dropping small black insects. Thousands of 1/16" cover the ground etc. Insects stain a raspberry, purple color when smashed. Insects are very soft.Insects present about 3 weeks...
view the full question and answer

Something eating cannas in Austin
July 14, 2012 - What is eating my cannas?
view the full question and answer

Non-native Chinese Pistache tree with dead branches in Georgetown TX
April 08, 2010 - Have mature Chinese Pistachio tree with many dead branches and few buds forming so far this spring - has been beautiful for many years. Do you know why this is happening and what can be done about it...
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