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

Friday - July 23, 2010

From: Las Vegas, NV
Region: Rocky Mountain
Topic: Non-Natives
Title: Proper deadheading of non-natives Arabian Jasmine and Crape myrtle from Las Vegas
Answered by: Barbara Medford

QUESTION:

Advise please on proper deadheading of Arabian Jasmine, and of Crape Myrtle. They are both blooming great but I want to know once the petals fall should I deadhead and will it help them to bloom again, perhaps in the same season?

ANSWER:

Jasminum sambac, Arabian Jasmine, is native to southwestern and southern Asia, and is hardy from USDA Hardiness Zones 9 to 11. This Floridata website has some information on it, as well as a warning about invasiveness:

"The Florida Exotic Pest Plant Council lists this species as a Category II exotic invasive. This indicates that it has increased in abundance or frequency but has not yet altered Florida plant communities to the extent shown by Category I species. These species may become ranked Category I, if ecological damage is demonstrated. Arabian jasmine cannot be recommended for landscape use in Florida and caution should be exercised when considering this plant for use in similar frostfree climates."

The Arabian Jasmine is hardy in Zones 9 to 11, and the Floridata website above has information on pruning and culture. 

While there is Malpighia glabra (wild crapemyrtle) which is native to South Texas, you very likely have Lagerstroemia indica, crape myrtle, native to temperate and tropical Asia. Because the Lady Bird Johnson Wildflower Center is dedicated to the growth, propagation and protection of plants native not only to North America but to the area in which the plant is being grown, we are not going to be able to help you very much.

We established that Las Vegas is in an area where the USDA Hardiness Zone can vary from Zones 8a to 9b. This article from Floridata will give you pruning, deadheading and culture information on Lagerstroemia indica, and we learned that it is hardy from Zones 7a to 9b, so it should be all right. 

 

 

More Non-Natives Questions

Are Castor Bean Leaves Toxic to Pets?
September 13, 2014 - I understand that the beans of the castor plant on lethal if chewed on. Are the leaves that toxic? I would love to plant this plant and not let it flower, but I do have visiting grandchildren and dog...
view the full question and answer

Digging wild buttercup from roadside in Mechanicsville MD
May 28, 2012 - Mr. Smarty Plants, is it illegal to dig out wild buttercup in Maryland? I see them along the dirt road or just in the ditch. Since buttercup considered weed, I'm wondering what the law say about this...
view the full question and answer

Queen Palm Fertilization in Arizona
March 06, 2012 - I placed standard Miracle Grow in a root feeder device and inserted into the ground around all of my Queen Palms. Why have they taken a turn for the worse (furled tips on all new branches) Can you ov...
view the full question and answer

Ridding non-native centipede grass of native rattlesnake weed in Myrtle Beach SC
April 25, 2010 - How do I get rid of "rattlesnake weed" in my lawn of centipede grass in Myrtle Beach SC?
view the full question and answer

Non-native banana plants dying back in Rocklin CA
March 15, 2010 - I bought a home last July in Rocklin, CA that had several banana plants growing in the yard. They died back during the winter frost. We pruned them back to the ground and placed mulch over the top. ...
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