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

Vine to cover concrete retaining wall in Georgetown TX
March 02, 2013 - I have an unsightly concrete retaining wall and culvert covers that require fast coverage from a vine of some sort. The plant must be deer resistant and drought tolerant. The retaining wall and culv...
view the full question and answer

Protection from native invasive trumpet vines
April 17, 2008 - Mr. SP: I have invaders! Trumpet vines from a neighbor's yard, two doors away have taken over and are eating my garage and trying to steal all the sun from my clematis vines. How do I get rid of...
view the full question and answer

Red blister-like bumps on grapevine
April 17, 2008 - I have just discovered red blister like bumps on a grapevine. It is on the leaves as well as the stems. What could this be? Will it harm only the grapevine or other plants as well? Thank you.
view the full question and answer

Conditions for wisteria bloom on Ontario, Canada
November 05, 2005 - I live in Ontario Canada, and about 4 years ago I bought a shrub which was called wisteria. I loved this bush when I visited a cousin out in British Columbia. The problem is it has no trouble growing ...
view the full question and answer

Climbing vines for partial shade in North Texas
June 12, 2014 - I've read your recommendations for climbing vines in partial-shade, but requestor was from Central Texas (Austin-area). Would those recommendations hold true for North Texas (DFW area)?
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center