They also devour roses, crape myrtles, late blooming Magnolias, oak leaf hydrangeas, cherry trees, and more. Each of these pests leaves distinct signs on a hydrangea, so diagnosing the pest problem is simple. Great news! I have a climbing hydrangea and was wondering how to get a cutting or two to root so I can start them elsewhere. It is seven years old and still does not get a lot of blooms........but it might be in too much shade to do well. I killed as many as I could. (I use no Miracle Grow or chemicals to fertilize my flowers just homemade compost and bark chips.). They LOVE petunias and new guinea impatiens as well. Change ), You are commenting using your Google account. The Palace of Versailles — A European Destination Garden! Unfortunately, the very common and showy Mophead hydrangeas, or Hydrangea macrophylla hortensis (some seen above) do not feed the bees or other pollinators because their flowers are sterile. I will be trying it this way in the fall. do I change an adult walker to an upright position? What follows is a list of plants that Japanese beetles dislike. I have some from a few years back....does IS lost its potency after it get a bit old? This site uses Akismet to reduce spam. My husband and i ended up being so delighted that Ervin could complete his survey out of the ideas he got in your weblog. How to I get rust stain off porcelain tun next to drain? The Japanese beetles tend to love the leaves on my grape vine. I am going to plant it in every spot where I have previously planted petunias. They came from a climate that was cooler than ours and a lot more that the key to why mine aren't doing very well? It’s as if this pest is learning to eat everything! Japanese Beetles have destroyed my Hibiscus, and Hydrangeas, and are starting on my Crape Myrtle and Azaleas. What's the secret? Thanks for the reminder suggestion. Just found your blog and want to say that in my yard in central Virginia, Japanese Beetles devour the Corylus or American Hazel/Filbert. I've sprayed the shrubs with Eight and Neem at different times. 0. Helpful. I purchased a columnar birch that is resistant according to the label, Betula nigra Dura Heat. Thanks for the info. They swarm and if you have ever seen them swarm it is frightening. I used a small mister, maybe 1/2 to 3/4 cup water and maybe 8-10 drop of essential oil. Thanks for all the pieces! I’ve already published an article on Japanese Beetle Host Plants, in other words, plants you should avoid growing. Elaine Simmons. Hike the Appalachian Trail from Georgia to Maine! The Japanese beetles seem to find it to be delicious! I got superglue on my glasseslense how to remove without accetone? every spray a couple hundred drop from a 10′ x 10′ weeping cherry. I have always loved periwinkle (Vinca) for its bright colors and drought tolerance. Another reader also suggested garlic, green pepper tea (using vinegar.) Apparently it does not make a difference. These small commissions help pay for hosting and upkeep on A Gardener’s Delight and its sister website(s). I’ve found that the easiest method of control is to pick the Japanese beetles off the plants and knock them into a bucket of soapy water or a jar filled with rubbing alcohol. In previous years, they would congregate on my impatiens flowers and on my grape vine. This may also be a very young start and take longer to grow than normal if that is the case. Thank you Doug. What about your soil? I am hoping that they don’t like periwinkle…. This year, I didn’t plant impatiens due to the disease that they’re carrying. Not that Japanese beetles (Popilia japonica) are found everywhere, but they are spreading throughout both Europe and North America and chances are that, if your garden isn’t presently under attack, it will be one day soon. It seems accurate thus far. Photo by: Julie Martens Forney Julie Martens Forney. Is it healthy, loamy and amended with lots of organic matter? According to Auburn University, the most common pest problems to affect hydrangeas include Japanese beetles, red spider mites, aphids, leaf tiers, rose chafers and oyster scale. My neighbors are not in a financial position to put anything down on their lawns either...the average annual income in my township is $21,000. They attack mine also. Odd. I bought these 2 climging hydrangea's a few months ago and they are doing NOTHING. It is about 20 feet high and Donna is right, they are very slow growing. I've know others who have used Milk Spore....but we have 2 1/2 rural acres, have dogs that have the run of our property and are on a retirees budget so its not likely we can manage that. ( Log Out /  I no longer live there, but I’d like to know what this is for when I do grown my own hydrangeas. So we take into account we have the writer to give thanks to because of that. You can use Milky Spore for long term and Garden Alive's beneficial nematodes for short term. Interesting that the OSO Easy rose is doing so well. Thanks for the input! They tend to avoid them even when other plants nearby are almost totally defoliated. What are the Japanese beetles devouring in your garden? Plants That Japanese Beetles Hate. It is now and again perplexing to simply be freely giving facts that many the rest could have been selling. The Japanese beetles are devouring my native Virginia Creeper vines this year, including the one that started to climb up my deck stair railing. About the only plant group they avoid entirely is aquatic plants: they’re just not that great at diving!