Lilies forum→Lilies and their pests

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Caerphilly. South Wales
brownr26
Jun 3, 2018 5:59 AM CST
My garden lilies are being eaten by a orange/brown grub. They start eating the bottom leaves of the stem and work their way up the plant. as soon as you touch them they just turn to a jelly type substance. Can anyone help please.
[Last edited by brownr26 - Jun 8, 2018 3:50 AM (+)]
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Name: Sue
Ontario, Canada (Zone 4a)
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sooby
Jun 3, 2018 6:24 AM CST
Welcome!

Can you post a picture of the insect so we can identify it and better suggest options for control? I'm assuming it is not this pest of lilies pictured here:

https://www.google.ca/search?q...
Caerphilly. South Wales
brownr26
Jun 4, 2018 5:48 AM CST
I attach a photo of these bugs they look like ticks to me.

Thumb of 2018-06-04/brownr26/69f0cb

Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
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sooby
Jun 4, 2018 6:30 AM CST
Larvae of the lily leaf beetle.

https://bugguide.net/node/view...

There are pictures of mostly the adults in the link I gave earlier.
Caerphilly. South Wales
brownr26
Jun 4, 2018 9:00 AM CST
Thank you for the identification. How can I get rid of them.?

MichiganMike
Jun 4, 2018 7:41 PM CST
Brownr26, I do not have much experience with them, however, in The North American Lily Society Quarterly - which I received today there was an article on just that, authored by Paul Siskind. Your options: Basically, A.) handpicking - then squeeze the little buggers, or just flick them into soapy water(somewhat effective method of control...assuming you are very vigilant!. B.) Diatomaceous Earth - aerial sprinkle on plants and ground -at least according to this article, limited efficacy. (better at controlling the larvae than the adults) C.) Neem Oil - approx 0.003% by volume mixed a half teaspoon per 28 ounces of water. This study indicated a sizable reduction in larvae and adults with this method. D.) Sinosad (Spinosyn A and spinosad D) - approx. 0.0078% by volume by volume prepared from concentrate. "This resulted in the best results over the course of the season if you are using a single control method."

Perhaps some of the other folks on this forum that have more experience with the little buggers can chime in and describe what works for them.
Caerphilly. South Wales
brownr26
Jun 5, 2018 3:51 AM CST
Many thanks for your help. I am glad that I joined the NGA.
Name: Tracey
Midwest (Zone 5a)
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magnolialover
Jun 5, 2018 8:53 AM CST

Moderator

Welcome to NGA. Sorry to hear about your pest problem.
Name: Frank Mosher
Nova Scotia, Canada (Zone 6a)
Lover of wildlife (Raccoon badge) Birds Roses Clematis Lilies Peonies
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fwmosher
Jun 5, 2018 10:00 AM CST
Brownr26: Welcome to the Forum from "across the Pond," from another Colony! LOL. I am a huge Oriental Lily grower. SOOBY nailed it already, and others contributed, the pictures shown are of the individual, well hatched "Lily Beetles" and will turn brilliant red if you have not squished same already. There actually are two treatments for "Lily Beetles"! Here is my experience. Early Spring as soon as the lilies start to poke through the soil or shortly thereafter, get out there with your strongest eyeglasses (only to spot/detect the little btd's when they drop to the ground-which they will when you try to pick them off) and squash them. I have this theory that if I leave squashed lily bugs everywhere, eventually the birds might learn to do it for me-just a theory! LOL. Secondly, I participated last year in a Canadian/US study introducing a tiny parasitic wasp, under controlled conditions, to one bed of Oriental lilies.The wasp, the size of a black fly, attacks the first blackish looking goo on the underside of the leaves (from which a bunch of those teenage specimens you pictured emerge), effectively parasitically (better way to phrase that) killing the beetles long before the stage at which your pic illustrate. I have to say, there appears to be a decided difference in the number of Lily beetles in that bed! Way fewer! Initially, pick them off as others have suggested! Cheers!
Caerphilly. South Wales
brownr26
Jun 8, 2018 3:52 AM CST
Thank You! I tip my hat to you.

SunnyinMichigan
Jun 17, 2021 6:03 AM CST
For the first time, here in central Michigan I have lily beetles -- the larvae are gross! They chewed up 1/2 of a easter lily hybrid in one week. I've gone on patrol for more damage, but I'm looking for backup. Thank you for the neem and spinosad information Frank! I hope the parasitic wasps make it to Michigan!

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