Japanese Beetles-ack! Lemme tell you about them. They pupate in the soil, so the best plan of control is stopping them before they emerge as lil' zombies that eat your garden. How do you do that? You have a couple of choices:Beneficial Nematodes
- these pin worms arrive on a sponge the size of a credit card--alive and ready to eat any insect pupating in the soil! You dip that sponge in the soil to make nematode tea, water 'em in, and let them do their work. You need to reapply them every 6-8 weeks for optimum control, and the ones we sell are LIVE, raised on a live insect diet, and can live in your fridge up to 6-8 weeks as well, so buy 'em in bulk if you can swing it. Many of our competitors sell them freeze dried and they are not as effective. Each sponge has 1,000,000 nematodes on it and that covers about 2,500 sq. feet of space. You don't want to leave them in your watering can for more than 20 minutes or they'll drown. You also don't want your garden area/yard to dry out or they'll just burrow lower in the soil to find food, and die. These bennies are harmless to people and pets. Here's a handy link to nematodes from WSU:
(This is a PDF, let me know if you can't open it and I'll email it to you. email@example.com
Super comprehensive info! I love me some insect nerds.)Milky Spore Powder-
this is a bacteria that kills the grub and the spore replicates so after one or two applications of this in your yard/garden, you're set for a while. Organic, and expensive. Harmless to people and pets.http://www.wormsway.com/detail.aspx?t=prod&sku=MSP700
JBs cause other problems besides destroying your plants. They are the main food source for moles, voles, gophers, and groundhogs. If they are present in your soil, you'll have these pests too. Get rid of the grubs, get rid of the critters.
Hope this helps. Please let me know if you need anything else!