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

Monday - May 21, 2012

From: Sylvania, OH
Region: Mid-Atlantic
Topic: Invasive Plants, Non-Natives, Poisonous Plants, Vines
Title: Non-native Purple Hyacinth from Sylvania OH
Answered by: Barbara Medford

QUESTION:

I am wondering if I plant a Purple Hyacinth Bean vine seed under a tree and allow it to grow up the tree trunk, will it kill the tree?

ANSWER:

Lablab purpureus (Purple Bean Hyacinth) is a tender perennial native to Africa. The Lady Bird Johnson Wildflower Center is dedicated to the growth, protection and propagation of plants native not only to North America but to the area in which those plants grow naturally.

So, while we have no information on this plant in our Native Plant Database, we can refer you to some websites that do. First, here is a very good rundown of the characteristics of the plant from the Missouri Botanical Garden.

Another description of characteristics of this plant from North Carolina State University includes the toxcity of the bean. This article from Dave's Garden indicates that it would be an annual in your USDA Hardiness Zone, as it is not winter hardy. Also, in terms of its invasiveness, you might want to read this comment in that same article:

"The plant is lovely and easy to grow. However, be careful where you plant it because it can become invasive. It will take over and shade out other plants. Also, it is a prolific seed producer. I planted one about 6 years ago and loved it the first year. However, I am still trying to get rid of its off-springs."

Pictures of Purple Hyacinth.

 

 

More Poisonous Plants Questions

Is non-native Ixora poisonous to horses?
June 26, 2013 - My horse was eating an ixora bush at a park in south florida. Is the Ixora shrub poisonous to horses?
view the full question and answer

Is the fruit of Bradford Pears toxic to dogs?
November 16, 2010 - I need to know if the little Berries on the Bradford Pear trees are toxic to dogs? My labrador loves eating them. Thank you,
view the full question and answer

Evergreen trees for California that are non-toxic for dogs
February 19, 2014 - Hi, we live in California, San Bernardino County and would like to know what evergreen trees are safe to plant in our backyard with 2 little dogs being around. I did quite some search online but ever...
view the full question and answer

Campsis radicans or cow itch
April 03, 2008 - We cleaned my father-in-law's home-place up out in the country week-before-last. My wife, her 2 sisters and a niece have this unusual-looking poison on them. It is big red places and itches all ove...
view the full question and answer

Is the Texas buckeye as poisonous as the Ohio buckeye from Carrollton TX
April 10, 2011 - Is the Texas buckeye as poisonous as Ohio Buckeye?
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