En EspaŅol

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
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
3 ratings

Thursday - October 03, 2013

From: Cosby, TN
Region: Southeast
Topic: Plant Identification, Shrubs
Title: Plant identification of thorny shrub in Tennessee
Answered by: Nan Hampton

QUESTION:

I have a mid to dark green thorny type bush growing on my land in Cosby, Tennessee. I am originaly from NJ and I have never seen it before. The stalk is varigated and the thorns are plentiful and very large. Thank you in advance for your help.

ANSWER:

This sound a bit like Poncirus trifoliata (Trifoliate orange), an Asian native that is considered invasive.  It does have formidable long thorns on it.

There are several hawthorns that are native to Tennessee.  Here are four of them:

Crataegus flava (Summer hawthorn)  Here are photos and more information from Plants for a Future.

Crataegus phaenopyrum (Washington hawthorn)

Crataegus spathulata (Littlehip hawthorn)

Crataegus crus-galli (Cockspur hawthorn)

Here is a list of all 39 of the Crataegus species on our database.  You can use the NARROW YOUR SEARCH option to see the 14 that grow in Tennessee.

Ribes cynosbati (Eastern prickly gooseberry)

Smilax rotundifolia (Roundleaf greenbrier)  Here are photos from Vanderbilt University.

Smilax tamnoides (Bristly greenbrier)  Here are photos from DiscoverLife.org.

Zanthoxylum americanum (Common pricklyash)  Here are more photos from Iowa State University.

Aralia spinosa (Devil's walkingstick)

Maclura pomifera (Osage orange)

There are several species of roses (Rosa sp.) and blackberrie/raspberries (Rubus sp.)

If none of these appears to be the thorny shrub that you have seen, please visit our Plant Identification page to find links to plant identification forums that will accept photos of plants for identification.

 

From the Image Gallery


Washington hawthorn
Crataegus phaenopyrum

Littlehip hawthorn
Crataegus spathulata

Eastern prickly gooseberry
Ribes cynosbati

Common pricklyash
Zanthoxylum americanum

Devil's walking stick
Aralia spinosa

Cockspur hawthorn
Crataegus crus-galli

Osage orange
Maclura pomifera

More Shrubs Questions

Evergreen thorny bush for California
May 01, 2010 - I need to find an evergreen thorny type bush, shrub or tree that will grow with about 3-4 hours of morning sun only. Prefer CA native, inland/semi coastal. Purpose: To provide a deterrent for "tag...
view the full question and answer

Smarty Plants on lantana in Dallas
September 14, 2005 - For several years, the lantana plants in my backyard in Dallas grew and bloomed all Summer and Fall until the first real cold snap. I've loved having a native plant that didn't need constant care a...
view the full question and answer

Non-invasive, modest-sized shrub for driveway edge
February 24, 2010 - I need a hedge type plant for the end of driveway so cars know how far they can drive in. I would like them to be 3'-5' and the roots not to be too heavy that they raise wood barrier or grow under g...
view the full question and answer

Plants for streambank area in Oregon
September 14, 2012 - I am ready to replant a streambank area with native plants..what do you recommend for the Willamette Valley in Oregon? Thanks much!
view the full question and answer

Problems with non-native photinia in Austin
October 07, 2013 - Hi, I live in Cedar Park, TX (Austin Suburb)and have planted a number of Photinia shrubs in various areas of my property. All about 10 months old. The leaves are curling along their length on many...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP | STAFF
© 2016 Lady Bird Johnson Wildflower Center