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
7 ratings

Thursday - October 14, 2010

From: Nashville, TN
Region: Southeast
Topic: Plant Identification
Title: Identification of thorny tree with lemon-like fruit
Answered by: Nan Hampton

QUESTION:

What would be a small lemon like fruit that grows on a bush with large thorns? The fruit is about the size of a golf ball, kind of fuzzy yellow skin like a lemon and smells like a cross between an orange and a lemon. The flesh is like that of a lemon.

ANSWER:

This sounds like Poncirus trifoliata (hardy orange or trifoliate orange), an introduced species from China.  It is listed on the Center for Invasive Species and Ecosystem Health Invasive.org website and by TexasInvasives.org.  If this isn't the plant you have seen, please take photos and send them to us and we will do our best to identify it.  Visit Mr. Smarty Plants' Plant Identification page to read the instructions for submitting photos.

 

More Plant Identification Questions

Wild onions and garlic in Genus Allium
June 25, 2006 - My husband and I found a strange bulb like plant that when broken open it smells and tastes like strong onion or garlic. The heads are at the top of the plant though not at the root base like most wil...
view the full question and answer

Plant identification
May 07, 2008 - I have a green bush that us come up in the old garden spot it has littl green balls all over it with seeds like in them, what could it be? Thanks
view the full question and answer

Identification of Canopy Plant
December 01, 2008 - I recently adopted a large house plant from a neighbor who moved away. He called it a 'Canopy Plant', but I'm having no luck with that name when I search for care tips. It seems to be in poor healt...
view the full question and answer

Identifcation of four o clock-like flower
August 25, 2007 - I've run across a flower I cannot find any information on. I saw it in West Virginia. I know that a pix might be needed to identify, but, since this is somewhat unusual, I thought possibly you might...
view the full question and answer

Plant identification of 3-leaf plant with red berries in Utah
July 27, 2011 - I would like to send you a picture to ID a 3 leaf plant with red berries. Could you give me an email to do that? Thanks.
view the full question and answer

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