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
1 rating

Friday - June 15, 2012

From: King, NC
Region: Southeast
Topic: General Botany, Poisonous Plants
Title: What is white sticky substance in the Mandevilla vine?
Answered by: Nan Hampton

QUESTION:

When I was watering my Mandevilla one of the vines broke and there was a white, sticky substance that came out of the vine. I was just curious as to what that is.

ANSWER:

The white sticky substance is the sap of the Mandevilla.   Mandevilla species, native to South America, are members of the Family Apocynaceae.  The majority of the members of the family have this thick milky sap sometimes called latex.  Mandevilla spp. are not known to be poisonous but are related to species that are according to the Poisonous Plants of North Carolina database.   The Tortoise Table says that the sap of Mandevilla causes skin irritation in some people and, thus, should be avoided.   This website also suggests that since another member of the family, Oleander (Nerium oleander), is extremely toxic, it would be better to err on the side of caution and not feed the plant to your tortoise (if you have one) or eat it yourself!

 

More Poisonous Plants Questions

Natural fibers for lashing bamboo in weaving
May 07, 2008 - I live in Austin and am looking for plants I can use for weaving fibers, e.g. lashing bamboo for a small project. What plants and parts do you recommend? What resources do you recommend for informatio...
view the full question and answer

Identification of plant with red berries toxic to dogs
August 29, 2011 - I recently retrieved my poor doggy from the Vet. He had eaten a berry from an invasive-commonly seen brushy plant growing along my neighbors fence line. We try to keep our side clear-but the small lar...
view the full question and answer

Miami gardener needs to know toxicity of Cordia boissieri
October 12, 2010 - Hello. I have a question about Cordia boissieri. Is it toxic for humans (all parts of the plant)? I want to plant it in South Florida, in an area with children.
view the full question and answer

Pruning the leaves of Sago Palm.
March 10, 2010 - Is it a cardinal sin to remove all the sago palm branches? This winter they were so badly scorched by the cold that hardly a frond went unaffected. So I cut them all off as I needed to get around the...
view the full question and answer

Are magnolia trees toxic for dogs?
February 05, 2014 - Del Mar, California- are magnolia trees, (their bark, roots, pods) toxic to small dogs? My Westie terriers are exhibiting lack of appetite and diarrea this late winter. Tonight I saw on our local n...
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