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Japanese Bettle Control
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Posted by
dmoore66_gardener 6 (
My Page) on
Sat, Jun 30, 12 at 9:27
What is the best way to get to the bettles before they get to my roses?
Is there a preventative solution? |
Follow-Up Postings:
RE: Japanese Bettle Control
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- Posted by seil z6b MI (My Page) on
Sat, Jun 30, 12 at 9:46
| Not a preventive but it does help control the population, use a grub control on the lawn in the early spring. If you kill the grubs before they become beetles it helps. |
RE: Japanese Bettle Control
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| Milky spore. It is applied to the lawn and attacks the grubs. Might take a year or so, but it works for many. You can also cut off the blooms until JB season is over. A few just arrived in my yard this week, but I don't have a lot of blooms now anyway. |
RE: Japanese Bettle Control
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| You can kill the grubs in your own yard with either milky spore or Merit granules, and this will help your turf. However, JBs commonly fly a half-mile or more to find the foods they like, and the scent of roses attracts them--it is used in the scent-lure formula for traps. |
RE: Japanese Bettle Control
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| Here's a question to go along with the OP's; Since I'm expected the Japanese Beetle migration to make it to Manhattan Kansas within the next couple of years, should I apply the milky spore now? Will it build up in the soil without any JB grubs to fight? What other environmental effects does it have? |
RE: Japanese Bettle Control
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| Prof, if you're in a suburban neighborhood like mine with quarter acre lots of mostly turf grass (well watered turf grass) you would need to treat the entire neighborhood. Note that JBs seem to prefer light colored blooms and choose darker colors when you add new roses to your collection. Selectively disbudding the lighter colored ones helps if your JB pressure is low). |
RE: Japanese Bettle Control
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| So: Dark red roses, treat my 20 acres with milky spore, and give the neighbors Beetle traps on their birthdays and for Christmas? |
RE: Japanese Bettle Control
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| I don't think anticipatory use of MS would be recommended. It depends on sick grubs to multiply it and spread it around. |
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