Daylilies forum→Black Iridescent Beetles on Daylily Blooms.

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Name: Ian McBeth
Lincoln, NE (Zone 5b)
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SonoveShakespeare
Jun 29, 2021 8:14 AM CST
Hi everyone,

I came across a problem while daylily breeding this morning. I found these black iridescent beetles mating and crawling on a few of my daylily blooms. They look like figeater beetles. I had these same looking beetles attack the blooms on my two Rose of Sharon a few years back.

Should I be concerned about these insects???
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Name: Sue
Ontario, Canada (Zone 4b)
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sooby
Jun 29, 2021 8:30 AM CST
Can you post a picture? The only scarab beetle I can think of that might be on daylilies would be the Japanese beetle and it's not iridescent black.

https://daylilies.org/daylily-...
Name: Elena
NYC (Zone 7a)
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bxncbx
Jun 29, 2021 9:59 AM CST
I get lots of beetles on my daylilies. Here's a pic of one but I get others with the same shape in different colors.

Thumb of 2021-06-29/bxncbx/05a819

They don't bother the daylilies. They just hang out on them.
Name: Sue
Ontario, Canada (Zone 4b)
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sooby
Jun 29, 2021 10:17 AM CST
bxncbx said:I get lots of beetles on my daylilies. Here's a pic of one but I get others with the same shape in different colors.

They don't bother the daylilies. They just hang out on them.


Oriental beetle? If so, it's a plant feeder.

https://bugguide.net/node/view...
Name: Elena
NYC (Zone 7a)
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bxncbx
Jun 29, 2021 12:05 PM CST
@sooby Yeah, they are like Japanese beetles but I never see the adults do any damage in my garden. I think the larvae eat plant roots and such. But my area has seen a huge influx of skunks the last few years. They dig everywhere looking for worms and grubs! But I have noticed a huge decrease in Japanese beetles so I guess it is a good thing. Although not when I open my door and one is staring at me! Hilarious!
Name: Sue
Ontario, Canada (Zone 4b)
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sooby
Jun 29, 2021 12:42 PM CST
@bxncbx The oriental beetle (pictured in the link) is not the same as the Japanese beetle, and there was a report on the AHS Robin last year of oriental beetles (Anomala orientalis) damaging daylilies. Yes the grubs go for roots, same as Japanese beetles, and it too is an invasive alien species:

https://en.wikipedia.org/wiki/...
Name: Elena
NYC (Zone 7a)
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bxncbx
Jun 29, 2021 1:44 PM CST
I know they aren't Japanese beetles. I was at war with them for eating my roses. I ended up just having to give up.

Here's some pics of the Oriental beetles from 2017.

Thumb of 2021-06-29/bxncbx/bd0f93
Thumb of 2021-06-29/bxncbx/a457a0
Thumb of 2021-06-29/bxncbx/65eb70

I guess they do eat the flowers but the damage was so minimal I never really noticed. Those pics were from July 2. So basically the same time of year as now. I used to see them all over the garden but rarely do now. The skunks eat most of the larvae so I see hardly any beetles (Japanese or Oriental) now.
Name: Sharon Rose
Grapevine, TX (Zone 8a)
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Altheabyanothername
Jun 29, 2021 2:36 PM CST
I have also had those small black beetles and bean beetles on daylilies. I noticed they were really attracted to the color yellow. I went to the dollar store bought a bunch of those kids "yellow" sand buckets. I also had some yellow plastic containers from Nestle Quik powder. Note: I did buy one of every color sand bucket. Did an experiment, hands down winner... the beetles went to the yellow ones. I filled the buckets half way with water, dish soap, and a little baking soda (to discourage mosquitos). Set them around the garden. Every day I would scoop out the drowned beetles.

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Name: Larry
Enterprise, Al. 36330 (Zone 8b)
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Seedfork
Jun 29, 2021 2:44 PM CST
I have seen a few of those beetles, I have just been hand picking them. Only see a few during a weeks time so far.
Name: Ian McBeth
Lincoln, NE (Zone 5b)
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SonoveShakespeare
Jun 29, 2021 3:25 PM CST
sooby said:Can you post a picture? The only scarab beetle I can think of that might be on daylilies would be the Japanese beetle and it's not iridescent black.

https://daylilies.org/daylily-...


Here's a picture.
Thumb of 2021-06-29/SonoveShakespeare/063174

Not only people give others signs, but plants do too.
Name: Sue
Ontario, Canada (Zone 4b)
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sooby
Jun 29, 2021 3:48 PM CST
Yep, that's a Japanese beetle Sad
Name: Ian McBeth
Lincoln, NE (Zone 5b)
Try Naturalizing perennials! :)
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SonoveShakespeare
Jun 29, 2021 3:57 PM CST
sooby said:Yep, that's a Japanese beetle Sad


Any way I can get rid of them without using chemicals and/or pesticides???
Not only people give others signs, but plants do too.
Name: Sue
Ontario, Canada (Zone 4b)
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 29, 2021 4:05 PM CST
SonoveShakespeare said:

Any way I can get rid of them without using chemicals and/or pesticides???


You'll probably get more suggestions from people who've dealt with them, they haven't found my garden - yet. Are the grubs in your lawn? For those you can use beneficial nematodes, which in at least some areas work better than the alternative of milky spore disease (according to a talk I attended by an entomologist).

For the adults there are traps but they are often not recommended because they attract more from the neighbourhood. One recommended possibility is to knock them off the plants into a bucket of soapy water early in the morning if you're at home then, like many insects they're dopey first thing. That's all I can think of off the top of my head.

Name: Elena
NYC (Zone 7a)
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bxncbx
Jun 29, 2021 4:52 PM CST
I could send you some skunks! Whistling

The little ones are really cute! Just hope you've lost your sense of smell. I smell skunk almost every day. Thumbs down
Name: Lynda
Southeast Ohio
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FormerGWzoneLyndaWS
Jun 29, 2021 6:10 PM CST
sooby said:

One recommended possibility is to knock them off the plants into a bucket of soapy water early in the morning if you're at home then, like many insects they're dopey first thing. That's all I can think of off the top of my head.



Yep! We carry peanut butter jars with soapy water and flick Japanese Beetles into "the bubble bath of doom." Works later in the day when they are active as well, since they are usually focused on "dating".
Name: Ian McBeth
Lincoln, NE (Zone 5b)
Try Naturalizing perennials! :)
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SonoveShakespeare
Jun 30, 2021 9:16 AM CST
Sue and Lynda. Thank You! I'll try the soapy water trick.

Elena I wish you could. Skunks are cute. Lovey dubby
Not only people give others signs, but plants do too.
Name: Ian McBeth
Lincoln, NE (Zone 5b)
Try Naturalizing perennials! :)
Amaryllis Hostas Garden Photography Butterflies Bulbs Bee Lover
Enjoys or suffers hot summers Foliage Fan Lilies Daylilies Irises Region: Nebraska
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SonoveShakespeare
Jun 30, 2021 6:43 PM CST
@sooby Sue, do Japanese beetles also attack daylily buds? I have already lost buds on my favorite daylily, 'Spider Man'. There were mushy, browning, and holey buds that easily come off the scapes. Crying
Not only people give others signs, but plants do too.
Name: Sue
Ontario, Canada (Zone 4b)
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 30, 2021 7:21 PM CST
They haven't attacked them in a garden I know that has daylilies and Japanese beetles, and I don't think they would cause browning, holey and mushy. That actually sounds more like gall midge, have you looked inside a bud for maggots? If not that then maybe look for tarnished plant bugs or Lopidea confluenta.
[Last edited by sooby - Jun 30, 2021 7:22 PM (+)]
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