• Post Reply Bookmark Topic Watch Topic
  • New Topic

Japanese Beetles

 
Thomas Clodfelter
Posts: 20
Location: McDermott Ohio
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Anyone have an organic way to control (KILL) Japanese Beetles other than picking them off and drowning them or vacuuming them off?
 
John Wolfram
Posts: 640
Location: Lafayette, Indiana
19
trees
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Those yellow traps can be effective if a large number are deployed over several acres. A couple years ago, I put 15 traps out over 5 acres and put a dent in the local beetle population. Milky spore can be effective at killing the beetles that come out of your ground, but does little to stop the beetles that emerge from your neighbor's property and fly onto yours. Chickens also have a good reputation of killing the beetles.

Switching over from biological control to chemical/physical control, Neem oil and Chrysanthemum based pesticides (PyGanic, etc) supposedly knocks down the beetle population while Kaolin clay (Surround WP) may make the leaves irritating enough so the beetles move on to other trees/plants. Four O'clocks allegedly attract the beetles and are slightly toxic to them. This year I am trying out a combination of PyGanic and Surround WP, but the preliminary results have not been particularly encouraging.
 
Thomas Clodfelter
Posts: 20
Location: McDermott Ohio
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Thanks John Wolfram
 
Nick Kitchener
Posts: 465
Location: Thunder Bay, Ontario, Canada
8
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Those traps work well. You can modify the catchment part so that the beetles drop down a pipe, and into a chicken enclosure. The chickens learn the sound of a beetle falling inside the pipe and will be waiting when it comes out the end.
Something in concept like this:
 
John Master
Posts: 512
Location: Wisconsin
7
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I planted four o'clock flowers supposed to be irresistible yet toxic to beetles, we'll see.
 
John Wolfram
Posts: 640
Location: Lafayette, Indiana
19
trees
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
John Master wrote:I planted four o'clock flowers supposed to be irresistible yet toxic to beetles, we'll see.

Hey John, Japanese Beetle season is now in full swing down here in Indiana, so I was wondering if there was any update on how the four o'clock experiment was going.
 
John Master
Posts: 512
Location: Wisconsin
7
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
none yet, the flowers are slow to grow but luckily the beetles seem to not be an issue yet either, also my millipede issue hasn't reared its head yet so maybe I will get out easy this summer! Been slacking in the garden so maybe the plants they would otherwise be devouring just aren't out yet?
 
Troy Rhodes
Posts: 618
24
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I treated about 1/4 acre around my main orchard with milky spore, and inoculated a few strips of my neighbors' yards on all 3 sides of me. This is three years later, and I have seen about an 80% reduction. They are now an annoyance rather than a biblical plague.

It's not an overnight fix, but the milky spore really does help.

Once the milky spore population is established, it becomes much more self regulatory.


hth
 
Just put the cards in their christmas stocking and PRESTO! They get it now! It's like you're the harry potter of permaculture. richsoil.com/cards
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!