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?


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
2 ratings

Sunday - December 16, 2012

From: Naperville, IL
Region: Midwest
Topic: Poisonous Plants, Vines
Title: Lonicera sempervirens not harmful to dogs from Naperville IL
Answered by: Barbara Medford


Is the trumpet honeysuckle (lonicera sempervirens) harmful to dogs if eaten? I have been told in the past that the common trumpet vine is harmful, but this appears to be different. Thank you!!


We think you have two native vines confused -  Campsis radicans (Trumpet creeper) and Lonicera sempervirens (Coral honeysuckle). However, the scientific name you gave us, Lonicera sempervirens (Coral honeysuckle), is certainly correct, and both it and Campsis radicans (Trumpet creeper) are native to Illinois. You can follow the plant links to our webpages on both. Neither have any indication of being poisonous on their webpages, but Campsis radicans (Trumpet creeper) has sap that can cause skin irritation on contact. Both of these vines are capable of being invasive, but the trumpet creeper can be really  invasive, so the honeysuckle would be preferable. 

Just for your own comfort level, here are some plant lists you can consult when you are concerned about whether a plant might be harmful to your dogs:

Poisonous Plants of North Carolina

Texas Toxic Plant Database

Cornell University Plants Poisonous to Livestock

University of Pennsylvania Poisonous Plants Database

Plus, none of the lists specific for dogs (Humane Society of the United States, the ASPCA and Doberdogs) that I found has it named.


From the Image Gallery

Coral honeysuckle
Lonicera sempervirens

Trumpet creeper
Campsis radicans

More Vines Questions

Need a vine to cover a 8' cinder block wall in Fullerton, CA.
August 23, 2010 - Hi- I have a 8' cinder block wall that gets full sun, and need to find either a flowering shrub that would cover, or a vine that wouldn't be to hard to manage, or would not need to use a trellis....
view the full question and answer

Pipevine (Aristolochia sp.) found in Denton County Texas
August 24, 2009 - I am almost positive that I have numerous pipevine swallowtail in my garden in Denton County, TX. I read that the host plant for the larva is almost exclusively pipevine. Would any kind of pipevine be...
view the full question and answer

Failure to thrive of passion flower in Tunbridge Wells England
April 08, 2013 - I planted my passion plant 3 years ago and I have really looked after it. I think this winter has killed it, it looks so dead. I hope it can be saved; there isn't one part of it that is looking healt...
view the full question and answer

Identification of vine with white flower and \
May 02, 2008 - I have a vine intruding from my neighbors yard that has small white blooms on them (similar to morning glories) and on the stem of the flower below the bloom, a "tiny watermelon" is growing..... It ...
view the full question and answer

Trellis plant for Southern California
October 29, 2009 - What is the best selection for a trellis plant? I live in Southern CA (zip 91701), and the area is on the southern part of our home with little or no shade. Thanks!
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.
© 2015 Lady Bird Johnson Wildflower Center