Native Plants
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.
Did you know you can access the Native Plant Information Network with your web-enabled smartphone?
Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
rate this answer
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
Source for non-native Crown of Thorns from Bulverde TX
May 04, 2013 - Can you please tell me where I can buy a Crown of Thorns plant in or near Bulverde, Tx.
view the full question and answer
Pruning non-native oleanders
September 28, 2011 - I have an oleander that has become to "leggy". I read the pruning instructions, but where I want to prune, there are not any leaf nodes. Can I trim below at the base, or will I hurt the plant? I ...
view the full question and answer
Transplanting care of Mayten tree (Maytenus sp.)
November 06, 2007 - I planted a Mayten tree 2 years ago. It's about 8 feet tall. The trunk is about 1-1/2 or 2" in diameter. The earth around it sunk and now there is a "bowl" that fills with water in the rain. I...
view the full question and answer
Distinguishing native Celastrus scandens from non-native C. Orbiculatus from Lexington MA
June 08, 2014 - Dear Mr. Plants,
I maintain a wildflower garden with the Lexington Field and Garden Club in Lexington, Massachusetts.
Every year, I pull up sprouts of Celastris orbiulatis. I want to plan...
view the full question and answer
Caring for non-native Peace Lily
July 04, 2005 - I have given my closet plant too much miracle gro and the leaves are drooping really bad. What do I need to do?
view the full question and answer
Support the Wildflower Center by Donating Online or Becoming a Member today. |