En Español

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
1 rating

Saturday - October 03, 2009

From: Gloucester, VA
Region: Mid-Atlantic
Topic: Poisonous Plants
Title: Are leatherleaf viburnum or Carolina Sapphire toxic to horses?
Answered by: Nan Hampton

QUESTION:

Are Leather-leaf Viburnum or Carolina Saphire toxic to equine? I would like to plant them near the fence line.

ANSWER:

Mr. Smarty Plants found neither Cupressus arizonica var. glabra (Carolina Sapphire), a cultivar of Cupressus arizonica (Arizona cypress) that was developed at Clemson University, nor Viburnum rhytidophyllum (leatherleaf viburnum), a native of China, listed in any of the toxic plant databases listed below:

Poisonous Plants of North Carolina

Cornell University Plants Poisonous to Livestock

Toxic Plants of Texas 

University of Pennsylvania Poisonous Plants

Canadian Poisonous Plants Information System

Toxic Plants: Horses from the ASPCA

This doesn't guarantee that the plants are not toxic to horses, but it is a pretty good indication that they are safe.

As an alternative for the non-native leatherleaf viburnum from China, Mr. Smarty Plants would like to suggest several species of viburnum that are native to Virginia. Here are several recommendations:

Viburnum acerifolium (mapleleaf viburnum)

Viburnum dentatum (southern arrowwood)

Viburnum nudum (possumhaw)

Viburnum prunifolium (blackhaw)

Viburnum rufidulum (rusty blackhaw)


Viburnum acerifolium

Viburnum dentatum

Viburnum nudum

Viburnum prunifolium

Viburnum rufidulum

 

 

 

More Poisonous Plants Questions

Photinia toxicity to dogs
June 15, 2009 - is the photinia bush toxic to dogs??
view the full question and answer

Does Helasia diptera absorb toxic substances from Dover Plains NY
March 09, 2012 - Dear Mr. Plants, Halesia carolina is described as absorbing toxic substances: herbicides, pesticides and pollutants from water, air and soil. Does Halesia diptera do the same? Thank you.
view the full question and answer

Flying insects eating leaves of non-native Brugmansia in Aline CA
October 17, 2013 - I have an Angel Trumpet tree. We live in Aline, California 30 miles east of San Diego. Little yellow and black flying bugs eat the leaves. Do you have a remedy for this problem.
view the full question and answer

Is red tip Photinia toxic to dogs?
September 18, 2012 - Is the red tip bush toxic to dogs?
view the full question and answer

Sap from agave causing reactions from Edgewater FL
April 06, 2012 - Not only was I stuck with the century plant thorns and needle like ends when I was digging up its pups, but I also broke the carrot-like root of a few when I was transplanting and got the white sap on...
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 | JOBS | SITEMAP | STAFF INTRANET
© 2016 Lady Bird Johnson Wildflower Center