Hey everyone! As summer kicks in, I'm starting to notice those pesky Japanese Beetles showing up in my garden, specifically bothering my raspberries and a few rose bushes. I've been handpicking them for a couple of years, but it seems like their numbers are increasing every season. I'm reaching out to see if anyone here has experience dealing with these little pests, particularly when they're still in the egg stage. I've got a bumblebee colony in my yard and would like to avoid using chemicals as much as possible. Any advice would be greatly appreciated! I'm located in MI, Zone 6b.
3 Answers
If you're looking for something simple, triple action neem oil is a great option. It works well to deter a range of pests, including Japanese Beetles, and is relatively safer for beneficial insects when applied properly. Just be mindful of the timing and how you apply it, as with any spray. Stick with hand-picking too; it can really minimize their impact before they become a bigger issue. Good luck with your garden!
One option to consider is using milky spore. This can help manage the beetle grubs in the soil and potentially reduce future populations over time. It's a more natural method, so it won’t harm your bumblebees. Also, if you have critters like raccoons or skunks digging in your yard, they might actually be helping by targeting those grubs! Just remember, if you do research beneficial nematodes, make sure to do it at the right time and check for any impacts on bees. Good luck!
I've had some success with a couple of methods. First off, hand collecting works really well for me. I use a jar with a bit of water and catch them as they land on the plants. They often raise their legs ready to escape, so you can shake the branch over the jar and they'll fall right in. As for sprays, I suggest using triple action neem oil; it’s pretty effective against a variety of pests, including Japanese Beetles, while being less harsh on beneficial insects when used carefully. Just be sure to monitor the timing!
Thanks for the detailed help!

Thanks for the tip!