No beetles on my Cupheas, no beetles on my cannas, no beetles on my Monarda, No beetles on Jewelweed, no beetles on butterfly bushes, No beetles on Purple Coneflowers. Placing the bucket/container of soapy water and the beetles that you just knock into the bucket is working great for me
USDA hardiness zone 6
Heat zone 4
Sunset zone 39
Joni--- OH my! thats why I hate these critters so much they can destroy a plant so quickly. That is the way my schumanni usually looks but it hasnt been touched yet. They do love those cupheas for some reason. Although last year I also had them on honeysuckle, tomato plants, and more.
Penny-- Glad to hear the bucket of soapy water seems to be working for you. I have my bucket of soapy water by my DV plant even though there is only 1 dead beetle in it. Still didnt see any beetles on it . I usually check it 2 or 3 times to make sure. Usually the thing I look for is lacy leaves, easier to spot.
Joni that is really something with the beetles. I had read about them on the Forum but had never seen any until about 3 days ago. I found 4 eating on the cannas. Hopefully you can get rid of all of them.
My beetles were way down yesterday, likely due to the clouds. I have a stinky bucket of dead beetles in between the jacob cline and david verity so we'll see how that works over the next several sunny days.
I feel sympathy for you guys. When I lived in NY, they were a serious pest. They really like hollyhocks and dahlias. Luckily, we don't have them in WA...but we do have earwigs. They really chew up my trumpet vine blossoms and buds. I don't have a perfectly formed flower on my trumpet vine...but luckily the hummers don't seem to mind too much.
For the last 3 or 4 days I have seen no beetles on any plants they usually hit. I have not at any time seen them swarming this year thank goodness. But we shall see if they re-emerge once the temps drop.
As my jacob cline wanes, the beetles have moved over to the cupheas. They aren't real bad, but I've been finding a couple more each day on the in-ground david verity and potted schumannii. Today when driving down my street I noticed a birch tree at the top of the street has been completely ruined by these little devils. The entire tree is brown because every leaf has been skeletonized. Unreal.
When I have beetles I can find them on cuphea schumannii, david verity, and tomato plants. Last year they destroyed my schumanni plant to where I ended up ripping it out of ground in disgust. So this year I planted onions and garlic around my schumannii and have since moved it into a pot since it seems the JB are gone. I did have a bucket of soapy water with only two dead beetles[beside the david verity] since that is all I have found or seen in the last 10 days. I also put down another doze of milky spores granuals. By hand I put a lot of it thruout my garden as I have found grubs in my garden area before.
It is looking like the beetles are nearly gone for the year, thankfully. Overall, they were not as bad as last year. They were late to arrive and only slowly increased. Then there was a huge surge like I had never seen before, but it only last a few days. Their numbers then dropped way down again. The last couple weeks they slowly picked back up again and I frequently found them on my cupheas, but that didn't last too long and the damage to my david verity was much less than last year. Anyway, good riddance for another eleven months.
I think all & all they were down again this year but they aren't gone yet. I find little clumps of them but they seem to be only on some pigweed & my Rose of Sharon tree.
Indy Steve (Login Stevenindy) Hummingbird lover 2007
Re: Just When I Say Japanese Beetles Are Down...
August 16 2011, 9:54 PM
The last 3 years the beetles have been terrible quite destructive. But this year the count has been very low. I kept looking for the swarms but never happened. I had to look really hard just to find one. So whatever the case Im happy that they seemed to have disappeared. I have not seen any beetles for at least a month,, thank goodness nor any aphids.