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Getting rid of Japanese beetles on blueberry bushes starts with acting early in the season before the adults emerge and begin feeding on your plants.
These shiny green and copper insects can skeletonize your blueberry leaves fast, leaving behind lacy, brown foliage and stressed bushes.
If you have been searching for how to get rid of Japanese beetles on blueberry bushes, the good news is there are several effective methods you can use together for the best results.
In this post, we will walk through how to get rid of Japanese beetles on blueberry bushes using both natural and chemical-free approaches, plus how to keep them from coming back next year.
Why Japanese Beetles Love Blueberry Bushes
Japanese beetles are drawn to blueberry bushes for a few simple reasons, and understanding this helps you get rid of them more effectively.
1. Tender Foliage Is a Favorite Food
Japanese beetles feed on over 300 types of plants, and blueberry bushes are one of their favorites.
The young, tender leaves at the top of the bush are especially appealing to them during early summer.
This is why you often see the damage starting at the top of the bush and working its way down.
2. The Scent of Ripening Fruit Attracts Them
When blueberries start to form and ripen, the sweet scent pulls Japanese beetles in from all around.
That is why getting rid of Japanese beetles on blueberry bushes becomes urgent right around fruiting season.
3. They Release a Feeding Pheromone
Once a few Japanese beetles find your blueberry bush, they release a pheromone that calls in more beetles.
This is why a small problem can turn into a full-blown infestation within days if you do not act fast.
How to Get Rid of Japanese Beetles on Blueberry Bushes Naturally
If you prefer to avoid harsh chemicals, especially when fruit is present, here are the best natural ways to get rid of Japanese beetles on blueberry bushes.
1. Handpick Them Early in the Morning
The simplest way to get rid of Japanese beetles on blueberry bushes is to pick them off by hand.
Go out early in the morning while the beetles are still sluggish and drop them into a bucket of soapy water.
Do this every day for a week or two and you will drastically cut down the population.
2. Use Row Covers During Peak Season
Fine mesh row covers create a physical barrier that keeps Japanese beetles from ever reaching your blueberry bushes.
Just make sure you remove the covers during bloom time so pollinators can still get in.
3. Apply Neem Oil or Insecticidal Soap
Neem oil and insecticidal soap are gentle options for getting rid of Japanese beetles on blueberry bushes without harming beneficial insects too much.
Spray in the evening when bees are less active, and reapply every seven to ten days as needed.
4. Introduce Natural Predators
Birds, parasitic wasps, and even some nematodes in the soil all help keep Japanese beetle numbers down.
Encouraging these helpers in your garden is a long-term strategy for getting rid of Japanese beetles on blueberry bushes year after year.
Chemical Options to Get Rid of Japanese Beetles on Blueberry Bushes
When the infestation is severe, you may need something stronger to get rid of Japanese beetles on blueberry bushes.
1. Use Carbaryl or Permethrin Sprays Carefully
These sprays work fast, but always follow the label instructions and never spray while bees are foraging.
Also, stop spraying once fruit begins to ripen so you do not leave residue on your berries.
2. Avoid Japanese Beetle Traps Near Your Bushes
The bag traps sold in stores actually attract more beetles than they catch.
Place them far away from your blueberry bushes, or skip them entirely if you want to truly get rid of Japanese beetles on blueberry bushes.
3. Treat the Soil to Kill Grubs
Japanese beetles start as grubs in your lawn, so treating your soil with milky spore or beneficial nematodes can reduce next year’s population.
This is one of the most effective long-term ways to get rid of Japanese beetles on blueberry bushes.
Preventing Japanese Beetles From Coming Back
Once you have managed to get rid of Japanese beetles on blueberry bushes this season, a few habits will keep them from returning.
1. Keep Your Soil Healthy
Healthy, well-drained soil produces stronger blueberry bushes that can tolerate some beetle damage better.
2. Clean Up Fallen Leaves and Fruit
Beetles and grubs overwinter in plant debris, so rake up fallen leaves and old fruit each fall.
3. Rotate Your Monitoring Efforts
Check your bushes weekly from late spring through midsummer so you catch any Japanese beetles early.
So, How Do You Get Rid of Japanese Beetles on Blueberry Bushes?
Getting rid of Japanese beetles on blueberry bushes comes down to acting early, staying consistent, and combining a few methods at once.
Handpicking, row covers, neem oil, and soil treatments all work together to protect your harvest.
If you stay on top of it every season, your blueberry bushes will keep producing healthy fruit for years to come.