Rent Shop Volunteer Join

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

Sunday - April 26, 2009

From: Greenwell Springs, LA
Region: Southeast
Topic: Non-Natives
Title: Thorns on non-native orange trees in Greenwell Springs, LA
Answered by: Barbara Medford

QUESTION:

Navel orange tree has thorns, why is this?

ANSWER:

The orange (Citrus sinensis) is a hybrid, possibly of pomelo (Citrus maximus) and tangerine (Citrus reticulata); it originated in Southeast Asia. As such, it is out of our area of expertise at the Lady Bird Johnson Wildflower Center, where we concentrate solely on plants native not only to North America but to the area in which they are being grown. This Floridata website, Citrus Sinensis, has more information, and specifically says, "The twigs on many orange cultivars are thorny."
 

More Non-Natives Questions

Non-native smoketree for California City, CA
June 28, 2010 - I was wondering if you could tell me if it would be a good or bad idea to plant a Smoke Tree (most likely European) in the vicinity of a septic tank. We are looking for something which will provide a...
view the full question and answer

Problems with non-native gardenias in San Ramon, CA
July 11, 2009 - I have a Gardenia tree planted in my front yard that gets shade and sun. It is dropping leaves and the leaves that are left are yellow. I had been watering it every day, but decreased that to every ot...
view the full question and answer

Yellowing branches on non-native sago palms after freeze in Rusk TX
January 30, 2010 - My Sago Palms experienced a good freeze. Now they have a multitude of yellowing branches, in fact most of the plant is yellow. Please advise what to do to save my plants. They are about nine years ...
view the full question and answer

Non-native, and/or invasive bermudagrass, St. Augustine and Pistache from Houston
September 24, 2012 - Our St. Augustine lawn died suddenly this summer from either chinch bugs or grub worms (or both?), and a multitude of weeds and native Bermuda have taken over the area. Now that the weather has cooled...
view the full question and answer

Bermuda, not the only option in Memphis
November 04, 2014 - I'm building an energy efficient home in Memphis and want to extend that strategy to the landscaping. I'd like to plant native grasses, but this lot is surrounded by lots sodded with Bermuda grass....
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.