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 - June 25, 2007

From: Prairieville, LA
Region: Southeast
Topic: Poisonous Plants
Title: Toxicity of Lupinus ssp. (bluebonnets)
Answered by: Nan Hampton

QUESTION:

Are bluebonnets toxic to cattle?

ANSWER:

There are six species native to Texas that are known as bluebonnets (all designated as the Official State Flower): Lupinus subcarnosus, L. texensis, L. havardii, L. concinnus, L. plattensis, and L. perennis. In general, many species of Lupinus are called bluebonnets and most of those are considered toxic. In particular, the seeds are the culprits with high levels of alkaloids. Lupinus latifolius (broadleaf lupine) and the alkaloid anagyrine contained in its seeds (when eaten by a pregnant cow) is implicated in causing crooked calf disease. The Canadian Poisonous Information System lists symptoms of poisoning by Lupinus sericeus (silky lupine) for cattle, sheep, and horses. Montana Plant Life lists Lupinus arbustus ssp. calcaratus (longspur lupine) and Lupinus argenteus (silvery lupine), as well as L. sericeus, as having poisonous leaves and seeds.

L. perennis (listed as toxic by the Poisonous Plants of Pennsylvania database) is the only member of the genus native to Louisiana or Texas specifically designated as poisonous. In fact, the Texas Toxic Plant Database, based on the book, Toxic Plants of Texas by Charles R. Hart and others from the Texas Cooperative Extension Service of Texas A&M University, does not list any lupines at all. This suggests that poisoning by lupines in Texas and Louisiana (which share many of the same species of Lupinus) is not a serious problem. Nevertheless, Poisonous Plants of North Carolina lists all Lupinus species as toxic if large quantities of seeds are eaten. If cattle are kept in an area where there is little forage except bluebonnets with many mature seed pods, there could be serious concern about risk of poisoning.


 

More Poisonous Plants Questions

Cenizo safe for consumption by parrots from Phoenix AZ
April 30, 2012 - Could you tell me if Cenizo, (Leucophyllum frutescens) branches and leaves can be fed to pets? (parrots)I read the leaves were often used for tea for humans, but can't find an information if safe fo...
view the full question and answer

Plants to replace poison ivy and brush
June 23, 2008 - I am right next to a highway in Paradise, CA 95969. I am having brush and poison oak removed in that area and want to plant something fast growing and draught resistant. I am thinking about Oleander...
view the full question and answer

Petals of flowers on cake from London
August 28, 2010 - Hi could you confirm that Gemini, Lisianthus and Lilies are non toxic if positioned onto a fresh cream cake (stem will be paced into a vial but the petals will come into contact with the cream). Thank...
view the full question and answer

Non-poisonous Hedge for Southern California
November 27, 2010 - What is a non-poisonous (to dogs), fast-growing, evergreen plant that I can grow as a tall screening hedge for privacy? I find differing opinions on Carolina Cherry and Podocarpus gracilior. Thank you...
view the full question and answer

Shrub to scrren house from dust from gravel road
July 28, 2013 - HI: We live in the foothills of Dobbins, California (2 hours North of Sacramento, Ca). I live on a gravel dirt road with traffic that goes about 45 miles an hour. When they drive by our house it lo...
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