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
Not Yet Rated

Tuesday - February 05, 2013

From: Sugar Land, TX
Region: Southwest
Topic: Privacy Screening, Cacti and Succulents, Shrubs, Trees
Title: Thorny shrub for deterring break-ins in southeast Texas
Answered by: Nan Hampton

QUESTION:

Looking for a very, very, thorny three or four foot tall shrub for in front of windows to deter break-ins. Considering Rosa Rugosa rose but it is not native.

ANSWER:

Unfortunately, there aren't any roses native to your part of Texas, but I can offer a few prickly shrubs, trees and cactus bushes that are native to Fort Bend County or adjacent counties.

SHRUBS:

Erythrina herbacea (Coralbean) grows to 6 feet but usually dies back in winter (depending on the winter low temperature).  It's long branches are very thorny and would certainly discourage anyone trying to get past them.  It has beautiful red flowers in the spring.  Here are more photos and information from Aggie Horticulture, the School of Biological Sciences at the University of Texas and from the Florida Native Plant Society.

Ilex opaca (American holly) is evergreen and has very prickly leaves.  It is a slow grower but can reach heights of over 30 feet.  There are, however, dwarf cultivars (e.g., Ilex opaca 'Maryland Dwarf') that grow to only 3 or 4 feet high. 

Acacia schaffneri var. bravoensis (Huisachillo) grows 4 to 12 feet tall with thorny branches.  Here are more photos and information from Texas A&M Agrilife Research and Extension Center at Uvalde.

 SMALL TREES:

Aralia spinosa (Devil's walkingstick) can grow to 12 or 15 feet all in one season and dies back in the winter.   It has very prickly stems and leaves.  It really is a small tree rather than a shrub.  Here are more photos and information from Duke University.

Acacia farnesiana (Huisache) is really a small tree growing to over 15 feet.   It is semi-evergreen and has straight spines on stems.  Here is more information from University of Arizona Pima County Cooperative Extension.

Crataegus texana (Texas hawthorn) can grow to a height of 20 feet but is armed with 1 to 3-inch thorns.   Here is more information from Aggie Horticulture.

CACTUS:

You might also consider cactus such as Cylindropuntia leptocaulis (Christmas cactus) or Opuntia engelmannii var. lindheimeri (Texas pricklypear).  Both can grow as high as 5 feet and are certainly armed with impressive spines.

 

From the Image Gallery


Coralbean
Erythrina herbacea

American holly
Ilex opaca

Huisachillo
Acacia schaffneri var. bravoensis

Devil's walkingstick
Aralia spinosa

Huisache
Acacia farnesiana

Texas hawthorn
Crataegus texana

Christmas cactus
Cylindropuntia leptocaulis

Texas pricklypear
Opuntia engelmannii var. lindheimeri

More Trees Questions

Non-native, and/or invasive bermudagrass, St. Augustine and Pistache from Houston
September 24, 2012 - Our St. Augustine lawn died suddenly this summer from either chinch bugs or grub worms (or both?), and a multitude of weeds and native Bermuda have taken over the area. Now that the weather has cooled...
view the full question and answer

Brown leaves on Burr Oak from Dripping Springs TX
October 05, 2013 - We have recently planted a 15 gal. burr oak in an correct hole with great soil and plenty of watering in. We have noticed some brown leaves. Should we be worried?
view the full question and answer

Problems with Live Oak tree in Jacksonville FL
February 21, 2011 - My live oak tree was planted 13 years ago as a mature young tree. Until last fall, it was full and healthy. Then leaves started turning brown and dropping. The company who cares for our lawn/shrubs ...
view the full question and answer

Trees suited for rocky, caliche soil of Central Texas
September 20, 2011 - I need to replace aging ashes. I have planted 2 Monterey oaks, but I would like to know what else I could plant whose roots will grow well in NW Austin caliche, rocky soil? Thank you.
view the full question and answer

Evergreen Privacy Screen for Maryland
November 19, 2012 - I am looking for an evergreen that will suffice to be planted as a privacy screen between my property and my neighbors. Looking to plant a row at the property line. The lot is shaded most of the d...
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.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center