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

Friday - September 25, 2009

From: Kansas City, MO
Region: Midwest
Topic: General Botany
Title: Are freshwater sponges poisonous if eaten by a dog?
Answered by: Nan Hampton

QUESTION:

Are freshwater sponges, native to Missouri, poisonous if eaten by a dog?

ANSWER:

Mr. Smarty Plants expertise is in native plants, not native animals.  It is true that freshwater sponges can look like plants because they often have algae growing on them, making them green.  In fact, sponges were thought to be plants until the 19th century.  Sponges, however, aren't plants—they are animals, members of the Kingdom Animalia and Phylum Porifera.  You can read about freshwater sponges in A Field Guide to Aquatic Phenomena from the University of Maine and from the Forest Preserve District of Cook County (Illinois). As to whether they are toxic to dogs are any other animal, not too much is known about their toxicity.  Principles and Methods of Toxicology edited by Andrew Wallace Hayes (5th edition, CRC Press, 2007) says that a couple of freshwater sponges from Australia and Europe can cause skin irritations and even more serious symptoms, including death. You might try to identify your freshwater sponge and then search the internet for any toxicity associated with its particular species.

 

 

More General Botany Questions

Kerrville Soil for Vegetables
May 03, 2012 - We are moving to our vacation home in Kerrville, TX and plan on putting in a vegetable garden on the sunny north side of our house. I'm assuming that your answer to the person inquiring about "soil...
view the full question and answer

How to determine the gender of wax myrtles from the WFC?
February 08, 2010 - Mr.Smarty Plants, have the wax myrtles that are up for sale at the Center's Spring Plant sale been sexed? I need a male plant. How can the sex be determined when the plant is young? Or can it?
view the full question and answer

Percentage of flowers that close up at night
July 19, 2007 - Percentage-wise, approximately how many species of flowers close up at night? Is there a list anywhere?
view the full question and answer

What is white sticky substance in the Mandevilla vine?
June 15, 2012 - 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.
view the full question and answer

Should Rock Harlequin stay green all winter?
May 28, 2014 - I have a rock harlequin that came up in a area that had been disturbed. It came up last summer/fall and the foliage survived our tough winter. I can not find anything about this plant staying green al...
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