Garden Pest Control

Caterpillars or Larvae and Brown Moths


mcjenkins1 added on September 22, 2016 | Answered

Our cannas have been decimated this year. At first look you would think grasshoppers, but have not seen any this year. It was not the canna worm that puts bullet like holes in the leaf. Going out in the morning there were hundreds of brown moths flying around them. We decided to just cut them down because we didn't know if they would attack some other plants and in the process found whitish larvae in white webs on the underside of some leaves. So far have not seen them on any other plants, accept a few small white webs on perennial hibiscus. Any comments, id of these moths, how to treat would be greatly appreciated.


Share this Question:
Log in or sign up to help answer this question.
Check here if you would like to receive notifications every time this question is answered.
You are subscribed to receive notifications whenever this question is answered.
ANSWERS
Alisma
Certified GKH Gardening Expert
Answered on September 23, 2016

You most likely have a webworm infestation. These are a group of moths whose caterpillars form webs. Several of the species will eat cannas. Removing the plants and removing all the webs and larvae you can see is a good idea to prevent them from spreading, since they will eat various shrubs as well. See these articles for advice:

https://www.gardeningknowhow.com/plant-problems/pests/insects/controlling-fall-webworms.htm
http://entnemdept.ufl.edu/creatures/trees/moths/fall_webworm.htm

Was this answer useful?
00
Looking for more?
Here are more questions about Garden Pest Control

You must be logged into your account to answer a question.

If you don't have an account sign up for an account now.