Japanese beetles on rose and hibiscus

[johnnyrmtl]

Hello all,

We are in the middle of summer and so come the Japanese beetles attacking my roses and hibiscus and destroying them . I don't know if someone has any experience with prevention and remediation but it's a problem in our part of the world now. I am picking them manually by hand to kill them for now

I purchased some neem oil ( as I've heard )but not sure how to apply properly and if it indeed will work.

I will attach pics soon

Thank you in advance ,
Johnny

 

[oneeye]

Hand picking them off is a good start and important to do every morning. They are coming from your lawn from hatching grubs. You can use a netting to stop the flying adults from eating on the plants. If you use a grub prevention on your lawn during beetle season, you can stop them.

I don't think neem will work, but Seven Dust does work well on roses. However, if the Rose of Sharon is in bloom its not good to dust with Seven Dust because it will bleach the flowers on the hibiscus. However, if the hibiscus has no flowers then you can dust it with Seven dust and it will stop the beetles. Good luck

 

[johnnyrmtl]

Great thanks for the tips and will need to get to the lawn first I guess as the source . Can you send the link for the seven dust product?

 

[Meadowlark]

Amazon has a handy shaker container for about $5...almost all box stores carry it also.

 

[big rockpile]

It is too late but I have found they like Borage and will stay on the bloom. Just pick them off and put in soapy water.

big rockpile

 

[johnnyrmtl]

These pests are a pandemic I hear now. I`m trying to pick them by hand when i see them on the roses or hibiscus

 

[Meadowlark]

Other than hand picking, which is effective on a small scale, other options are better than sevin in my opinion...

1) Bonide Japanese Beetle Killer gives immediate knockdown with pyrethrum.
2) Organic option: Spinosad : Very effective bio‑insecticide for severe infestations.

 

[johnnyrmtl]

I know it`s a losing battle
please send the links to these products if on amazon

thx

 

[Meadowlark]

I know it`s a losing battle
please send the links to these products if on amazon

thx

Just go to Amazon and type in Japanese beetle killer in the search...and you will see them all.

 

[johnnyrmtl]

Just go to Amazon and type in Japanese beetle killer in the search...and you will see them all.

Can't seem to find those products on Canadian site ... only traps

 

[Meadowlark]

Can't seem to find those products on Canadian site ... only traps

Really? That's surprising.

Here is the Japanese Bettle Killer photo right off my Amazon site...

 

[johnnyrmtl]

I'd really like to take preventive measures for these pests.

 

[Meadowlark]

I believe the best preventive measure is killing the grubs before you ever get beetles. Here are some standard preventive methods

Method	Targets	Safety	Speed	Notes
BTG	Adults + grubs	Very high	Moderate	Stops feeding quickly; death in days
Milky spore	Grubs only	Very high	Slow	Takes years to establish
Neem oil	Adults	High	Fast	Breaks down in 3–5 days; not preventive
Chemical insecticides	Adults + grubs	Low–medium	Fast	Can harm pollinators; systemic risks

Here is a product for it: