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

Thursday - May 06, 2010

From: Nacogdoches, TX
Region: Southwest
Topic: Plant Identification
Title: Plant identification
Answered by: Nan Hampton

QUESTION:

My neighbor has a few trees in his pasture that his horses love to eat the fruit off of. The fruit looks like a lemon but smaller and has lots of seeds inside of it. The trees have very long thorns on them also. Can you help me to identify what these trees are?

ANSWER:

This sounds like Poncirus trifoliata (hardy orange) a native of China and Korea.  It is also called trifoliate orange.  It is very hardy, surviving temperatures near 0 degrees F.  It is on the TexasInvasives.org list of invasive plants. If this isn't the tree you have seen in your neighbor's pasture, please send us photos and we will do our best to identify it.  Visit Mr. Smarty Plants' Plant Identification page to see the instructions for submitting photos.  You didn't ask, but it is listed as mildly toxic by the North Carolina Poisonous Plants Database but is not included in the ASPCA's Toxic and Non-Toxic Plant List—Horses.

 

More Plant Identification Questions

Plant identification
April 04, 2010 - There is a wildflower growing in my pasture. It is low growing, triangle leaves, flowers are blue, five petals with what looks like a white flower in the middle. Gods blessings to all there.
view the full question and answer

Plant ID–maybe a lupine?
February 02, 2015 - We have a strange plant growing in our flowerbed that we did not knowingly plant. It sprang up last summer and has continued to grow throughout the winter in spite of several freezes. We live just eas...
view the full question and answer

Purple bellshaped flowers in Washington state
July 16, 2008 - on Larch mountain, in the state of Washington, I saw purple, bell shaped flowers growing on a stalk. what are they?
view the full question and answer

Identification of mystery tree in Huntington Beach, CA
March 25, 2015 - Have a "tree" that has grown from about 18" tall to about 10' tall in a little over a years time. It has a central trunk that is about 3/4" in diameter at it's largest. It has short thin branch...
view the full question and answer

Weird-looking rootless plant, perhaps a fungus
August 23, 2008 - While out it my backyard (i.e. the Black Hills of South Dakota), I spotted a weird-looking rootless plant (I think it may be a fungus) growing beneath the Ponderosa Pines. It was the only one in the a...
view the full question and answer

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