Explore Plants

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
    
 

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

Wednesday - September 07, 2011

From: Roxboro, NC
Region: Southeast
Topic: Invasive Plants, Plant Identification, Poisonous Plants
Title: Plant identification of tree in North Carolina
Answered by: Nan Hampton

QUESTION:

I live in North Carolina have found a tree on our property that has thorny branches and round fruit (perfectly round) with a fuzzy outer layer that starts out green but then turns yellow. The inside resembles some kind of citrus fruit. They grow separately and not in clusters. What kind of tree is this? Thanks, Tara

ANSWER:

Mr. Smarty Plants believes your tree is Poncirus trifoliata (trifoliate orange) an invasive plant from China and North Korea.  Here are more photos and information.  You shouldn't try eating the fruit since it is listed as mildly toxic in the Poisonous Plants of North Carolina database.  It can also cause skin irritation. 

If this isn't the plant you described and you have photos of it, please visit our Plant Identification page to find links to several plant identification forums that accept photos of plants for identification.

 

More Poisonous Plants Questions

Foxglove safety from England
April 21, 2013 - Hi, regarding safety of foxgloves grown near edible plants - foxgloves are good companion plants for vegetables, in case of root vegetables they improve their storage life and quality. Foxgloves prote...
view the full question and answer

How toxic are wild cherries for horses?
June 11, 2009 - I purchased a beautiful piece of heaven in the rural suburbs. I have three horses and grow my own hay. Unfortunately, I have just learned the woods surrounding my field is lined with Black Walnut, Wil...
view the full question and answer

Drought-tolerant plants that are non-toxic to dogs
May 10, 2010 - I am looking for drought-tolerant native plants non-poisonious to dogs. We are putting gardens in an area the dog has access to, and she likes to sample the darndest things. South side of the house,...
view the full question and answer

Safe grazing for donkeys and goats from Osteen FL
June 30, 2012 - I am having a very difficult time trying to find shrubs, hedges, plants, flowers, or trees etc. that are safe for donkeys and goats. We live in Zone 9 and have a small farm. I've had to pull every ...
view the full question and answer

Evergreen hedge non-toxic for horses and goats in Muskogee, OK
March 31, 2009 - I live in northeastern Oklahoma. I am trying to find an evergreen hedge, 6-8 ft in height, 4-6 ft spread that is not harmful to horses or goats. Everything that I have found is for Zone 8 or 9.
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.