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 Pests Questions

Spots on bark of Mountain Ash from Engadine MI
April 30, 2012 - I have a mountain ash that is about 5 years old & have just noticed white, patchy, scaly looking spots on the bark. Is this something to be concerned about???
view the full question and answer

Leaf Galls on Live Oak
March 20, 2012 - Hi - I have a live oak tree that always seems to have thinner foliage than our other two. Upon closer examination today I found small brown balls all over the mature leaves. The balls look and feel ve...
view the full question and answer

Replacement for non-native Italian Cypress in Austin
July 10, 2011 - I would appreciate your assistance with some native plant options to replace Italian Cypress trees in the Arboretum area of Austin, TX. I have 12 of the trees on the north side of the house to obstru...
view the full question and answer

Insect infestation, identification and treatment
April 21, 2008 - help! I have an infestation of small flies in my flower/vegetable beds. They seem to be eating the leaves of just about everything. I've tried to find out exactly what they are, but haven't had any ...
view the full question and answer

Bugs on yucca plant in New Jersey
August 06, 2008 - I noticed small bugs ALL OVER 4 established yucca plants all near each other. They may look like Halticotoma valida but I'm not positive. There is no brown on the leaves except for the large amount...
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