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
5 ratings

Friday - May 04, 2007

From: Wills Point, TX
Region: Southwest
Topic: Invasive Plants
Title: Toxicity and invasiveness of Scarlet Wisteria
Answered by: Nan Hampton

QUESTION:

I recently purchased seeds for Scarlet Wisteria (Chinese rattlebox tree). I spoke to a neighbor about this and she warned me not to plant them as they were poisonous to hummingbirds. Can you clarify this for me? Also, is this a good species for planting in the Dallas area?

ANSWER:

Scarlet wisteria or Chinese rattlebox tree (Sesbania punicea) is an invasive introduced species from South America, so for that reason alone Mr. Smarty Plants strongly urges you not to plant your seeds.

Poisonous Plants of North Carolina says that the seeds are highly toxic and may be fatal if eaten. The Alabama Cooperative Extension System reports: "The seeds contain a saponin that is quite toxic to poultry, cattle, sheep, goats, and humans. As few as nine seeds per bird can be fatal." However, I could find no indication that the nectar is toxic to hummingbirds.

Mr. Smarty Plants recommends the following beautiful native hummingbird- and butterfly-attractant plants as substitutes for the scarlet wisteria:

Bignonia capreolata (crossvine)

Campsis radicans (trumpet creeper)

Asclepias tuberosa (butterfly milkweed)

Malvaviscus arboreus var. drummondii (wax mallow)

Lonicera sempervirens (trumpet honeysuckle)


Bignonia capreolata

Campsis radicans

Asclepias tuberosa

Malvaviscus arboreus var. drummondii

 


Lonicera sempervirens
 

More Invasive Plants Questions

Need to know about the invasiveness of Datura wrightii.
May 17, 2010 - Dear Mr. Smarty Plants, I recently purchased a small Datura wrightii plant for my front garden. I've been researching it, since I know it is quite toxic, and couldn't find a good answer to one quest...
view the full question and answer

Is Mimosa pudica poisonous from Janesville WI
February 21, 2014 - I have just recently learned of Mimosa Pudica also known as the sensitive plant. I see using the USDA website that it can be found in the USA so I think that covers the North America aspect. I have b...
view the full question and answer

Non-native, invasive Asiatic Jasmine from Austin
October 25, 2012 - Is Trachelospermum asiaticum considered a native texas plant? Is there an example growing at the Center that can be viewed?
view the full question and answer

Affect of poisonous plant roots in soils for vegetables from Rusk TX
May 11, 2013 - I have a huge old flowerbed in front of my house that I want to plant veggies in, but I'm afraid to. It has a catalpa tree there, which I sell the worms from, but the entire tree (bark, leaves, flowe...
view the full question and answer

Non-native invasive chickweed in Collegeville PA
December 31, 2011 - My problem is chickweed. I have found considerable information on how to eliminate the chickweed. My question is after following a suggested elimination process: How and when do I reseed with grass?...
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