Explore Plants

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
    
 

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

Saturday - September 12, 2009

From: Wewoka, OK
Region: Southwest
Topic: Invasive Plants
Title: Is conium maculatum safe for cataracts from Wewoka OK
Answered by: Barbara Medford

QUESTION:

My doctor has prescribed conium maculatum for my cataract problems. Is this safe to use in the eyes?

ANSWER:

We are gardeners, not doctors, but we can tell you about the plant you are asking about. Conium maculatum is native to Africa, Asia and Europe and was imported into North America as an ornamental in the 1800's. The Lady Bird Johnson Wildflower Center is dedicated to the care, propagation and protection of plants native to North America and to the area in which it is being grown. Although that places the plant out of our range of expertise, this USDA Plant Profile shows it is growing, non-native,  in nearly every state in the United States and nearly every province in Canada.

But the main thing you need to know is that every part of this plant, especially the fresh leaves and fruit, contains a volatile, oily alkaloid, which is so poisonous that a few drops prove fatal to a small animal.

We urge you to visit a medical doctor, an ophthalmologist, and seek his opinion on any treatment of cataracts. Please do not touch, gather or use any portion of this plant. The common name of Comium maculatum is Poison Hemlock, and it is the poison that killed Socrates.

 

More Invasive Plants Questions

Butterflies attracted by Pink Evening Primrose from Burnet TX
July 30, 2012 - I see information on Pink Evening Primrose that says it attracts 'many butterflies' Please tell me which butterflies and name them? I've looked everywhere and am just exhausted and frustrated with...
view the full question and answer

Are non-native Chinese pistache poisonous to alpacas from Galt CA
October 07, 2012 - Are Chinese Pistachio trees poisonous to alpacas?
view the full question and answer

Evergreen hedge for constant rain
June 24, 2008 - We live in Washington State up north by Canadian border. We need a hedge that will survive the constant rain. We have tried cedar. They seem to turn brown and die,one at a time so we keep replacing th...
view the full question and answer

Absence of grass around a willow tree in Georgia
December 22, 2008 - In the past three years my Willow tree has grown from a stick to a lovely tree. Unfortunately, the grass under and around the tree is gone. Nothing left but dirt. Is there a remedy?
view the full question and answer

Smarty Plants on invasive and exotic plant species
March 26, 2004 - Where can I go to learn more about invasive and exotic plant species?
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.