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
6 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

Containing roots in Kaysville UT
October 26, 2009 - I'm planting my yard in all native Rocky Mountain and Great Basin plants. Is there a way to halt or contain the root propagation of Smooth Leaf Sumac and Quaking Aspen? I've considered digging dow...
view the full question and answer

Invasive spreading weed in Michigan that looks like a small pine tree
July 29, 2013 - I have an invasive spreading weed in my gardens. It has black root system, comes up looking like a small pine tree. The green breaks off when you try to pull it.
view the full question and answer

Negative and positive effects of invasive dandelions from Rama Ontario
January 12, 2012 - How do Dandelions have a negative impact of being a invasive and a Positive impact of being a invasive species ?
view the full question and answer

Control methods for Cenchrus spinifex, Coastal sandbur
September 22, 2006 - I have some of the nicest, thickest, greenest grassburs in the county of Erath. What is the best and quickest way to get rid of them? I have heard of a product called cornmeal gluten. Any info appreci...
view the full question and answer

Getting rid of bermudagrass
July 13, 2010 - How do I get rid of bermuda grass in my San Augustine 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