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
2 ratings

Tuesday - August 18, 2009

From: Aurora, MN
Region: Midwest
Topic: Poisonous Plants
Title: Toxic effect of mulberry fruits and sap
Answered by: Nan Hampton

QUESTION:

What would be the toxic effect of the unripe fruit of the mulberry tree or the white sap?

ANSWER:

The Poisonous Plants of North Carolina database lists both the North American native Morus rubra (red mulberry) and the introduced Morus alba (white mulberry) as mildly toxic.  The toxic parts are the unripe berries and the white sap from any part.  The symptoms are hallucinations and stomach upset.  This database says that it "causes only low toxicity if eaten". This is the only toxic plant database I could find, however, that listed it. 

Delena Tull in Edible and Useful Plants of Texas and the Southwest says that the pollen of these two trees causes hay fever.  She also says: 

"Unripe fruit and milky sap can cause gastrointestinal distress and some toxicity...The sap can cause a skin rash."

L. A. Peterson in A Field Guide to Edible Wild Plants of Eastern and Central North America says about both species:

"Unripe fruit and raw shoots contain hallucinogens."


Morus rubra

Morus rubra

 

 

More Poisonous Plants Questions

Information about Rosa acicularis
March 07, 2008 - Hi: At your site under "Benefit" it is mentioned that the seeds, leaves bark and twigs of Rosa acicularis Lindl. can be fatally poisonous to humans and animals. None of my past or present studies h...
view the full question and answer

Are crepe myrtles (Lagerstroemia sp.) toxic to horses?
November 21, 2008 - Are crepe myrtle trees toxic to horses ?
view the full question and answer

Is Mexican petunia (Ruellia brittonianna) toxic to dogs
June 23, 2009 - I would like to know if the plant known as Mexican petunia,or Katie dwarf (Ruellia brittonianna) is toxic for dogs. Thank you. 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

Grasses for horses in Austin
October 27, 2012 - Hello Mr. Smarty Plants We just bought 4.5 acres in Travis County off HWY 290. We have 3 horses we keep on it but there is very little grass in the pastures. What is the best type of grass to seed ...
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