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 - August 06, 2007

From: E Dummerston, VT
Region: Northeast
Topic: Pests, Herbs/Forbs
Title: Defenses against imported red leaf beetles on lilies
Answered by: Barbara Medford

QUESTION:

I've recently discovered small red beetles of some kind on my lilies, which they are happily devouring. I've been picking them off with my fingers and squashing them, but I'd like a better alternative. I'd prefer not to use chemicals. Is there a homemade recipe I can try that will kill them? Can you tell me what they are? I've never seen them before this summer. Thanks for your help.

ANSWER:

Indeed, you are the victim of the red leaf beetle. The reason you are just now seeing it is that it only recently migrated into New England, probably from Europe with a shipment of lily bulbs. There are no known predators of this pest in the Western Hemisphere, and the little monsters can destroy a lily in a very short time. It attacks only the true lily, not daylilies. There are three stages in which the beetle is visible on your plant: the eggs, small black spots on the underside of the leaves, the larvae, nasty slug-like creatures, and the beetle itself. Hand-picking is about the best suggested method, and if you have only a few plants, this might suffice. Actually, the larval stage is the most destructive, actively chewing up everything it can get to, but to destroy the eggs and the beetles is to destroy future larvae. When you are hand picking them (a nasty job, you must really love your lilies!) make very sure they're dead, whatever stage you're after. One suggestion was to drop them in a container of soapy water or water with vegetable oil on the top. Don't just knock the beetles off.

 

More Herbs/Forbs Questions

Heirloom plants for Gault Homestead in Austin
April 15, 2009 - Dear Mr. Smarty Plants, The Gault Homestead at 2106 Klattenhoff in the middle of Wells Branch Subdivision is to be planted with heirloom or heritage plants soon. There is some sun for the planter bo...
view the full question and answer

Pruning pink skullcap and rock daisy from Austin
February 06, 2013 - I have some pink skullcap and rock daisy and other plants in my yard that never entirely die back over the winter. Can you tell me what kind of pruning is appropriate? How far can/should I cut them ...
view the full question and answer

Plants that will grow on the Connecticut coast
June 08, 2010 - I live on the coast in Connecticut and have a hard time growing plants here. I live about 1/2 mile from the beach and find that my soil is very rocky. The only plants that have done well in my yard ...
view the full question and answer

Is there a purple passion hibiscus?
May 27, 2009 - Hello! I bought a climbing vine in a hanging basket that looks like a passion flower vine to me. However, I was told that it was a "purple passion hibiscus." I cannot find such a flower on the inter...
view the full question and answer

Will Convallaria majuscula grow in Texas?
September 10, 2015 - Can I transplant Convallaria majuscula, American lily-of-the-valley I originally brought from northern Wisconsin a few years back to the Chicago area to my new home in Buda Texas?
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP | STAFF
© 2016 Lady Bird Johnson Wildflower Center