Host an Event Volunteer Join Tickets

Support the plant database you love!

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

Native Species List for Ponca OK
June 24, 2011 - I planted daylilies in my Austin garden and did not do well. I moved these daylilies to my garden in Ponca City Oklahoma and have done outstanding relying only on mother nature's rain. My garden in ...
view the full question and answer

Non-native lilac in a pot in New Hampshire
May 18, 2009 - I live in an apartment with a balcony that gets morning sun but is in the shade by 3 pm. Can I plant a lilac in a pot? What perennial would do well in New Hampshire? I love lilacs and would like to...
view the full question and answer

Is common yarrow a Texas native?
October 16, 2009 - Dear Mr. Smarty Plants, Is common yarrow Achillea millefolium a Texas native? Please enlighten me.
view the full question and answer

Identifying non-native lichens from Austin
February 23, 2013 - Can you provide help identifying lichens? If not, can you suggest someone who can?
view the full question and answer

Non native crape myrtle changing bloom colors in Sonora CA
September 05, 2012 - I have a Red Rocket Crape Myrtle that was planted a little over a year ago. Last year the bloom was a beautiful deep red and this year it is a Mauvie pink. Is there something I can do to bring it back...
view the full question and answer

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