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 - May 30, 2008

From: Houston, TX
Region: Southwest
Topic: Vines
Title: A Pipevine poisonous to Pipevine Swallowtails
Answered by: Barbara Medford

QUESTION:

I have heard that a specific Pipevine is poisonous to the larva of Pipevine Swallowtails. Is this true? If so, what is the poisonous species of Pipevine, and what other types can I plant that will not be poisonous? Thank you!

ANSWER:

All of the pipevine plants native to North America (which is what we deal with at the Lady Bird Johnson Wildflower Center) are members of the genus Aristolochia. Many experts consider all parts of plants of that genus to be toxic. In an article by the Napa Valley Master Gardeners, we picked up this information on the toxicity of the plant to the pipevine swallowtail.

"All parts of the pipevine plant, including the seed pods, are toxic to humans. In contrast, caterpillars can ingest the toxins, but then they become unappetizing to birds. Yellow jackets also have no problem cleaning out the pods as soon as they open."

So, apparently, the toxicity in the plant is for the protection of the caterpillars for this beautiful butterfly. We could find no reference of any kind about any member of this genus being poisonous for the larvae. We did note that the plant is not considered a nectar source for the butterfly; perhaps because the nectar would be toxic for the adult.

Here are the species of Aristolochia that are native to Texas:

Aristolochia coryi (Cory's dutchman's pipe)

Aristolochia erecta (swanflower)

Aristolochia pentandra (Marsh's dutchman's pipe)

Aristolochia reticulata (Texas dutchman's pipe)

Aristolochia serpentaria (Virginia snakeroot)

Aristolochia tomentosa (woolly dutchman's pipe)

And here is a page of pictures of various species of Aristolochia.


Aristolochia erecta

Aristolochia tomentosa

 

 

 

More Vines Questions

Identification of vine with white flower and \
May 02, 2008 - I have a vine intruding from my neighbors yard that has small white blooms on them (similar to morning glories) and on the stem of the flower below the bloom, a "tiny watermelon" is growing..... It ...
view the full question and answer

Non-blossoming trumpet vine
November 05, 2007 - About 9 years ago I started a trumpet vine, from seeds that I got from plants that were invading an empty home. I saw how invasive it was. It had worked its way into the windows and front porch and ...
view the full question and answer

Identity of milkweed vine with smooth seedpod
November 23, 2012 - I believe the vine I am curious about may be Matelea reticulata. However, most of the pictures I have seen of that vine show bumps on the exterior of the seed pod, and the pod I have is green and smo...
view the full question and answer

Native vine to replace non-native Ficus pumila creeping fig
April 01, 2012 - What is a good evergreen alternative to ficus pumila to cover a rough-textured concrete wall in Houston TX?
view the full question and answer

Flowering vine for shade in Southern California
May 11, 2012 - Flowering climbing plant for shade in Palm Desert, CA.
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