![]() ![]() I have written a few detailed guides on this topic, including what grub killer is best to use and when to apply grub control.įor a homemade remedy, you may look at using dawn dish soap for killing grubs in your lawn. There are many ways to go about controlling grubs in your lawn. Adding to this, it can take a while for the bacteria to build up under ideal conditions, somewhere between 4 – 5 years, which isn’t ideal for tackling a large population of Japanese grubs. ![]() Milky spore powder inoculates an area of soil and can control Japanese Beetle. Some states such as NH and VT do not receive consistently high soil temperatures. High quality milky spore powder, containing the bacteria Bacillus popillae. Soil Temperatures Must Be Between 60 Degrees to 70 Degrees for Three Months However, a small population of Japanese grubs affects the efficacy of milky spores.Ī small population of Japanese beetle grubs will fail to increase the bacterial population enough to grow and spread into the soil. Whether Japanese beetle grubs or any other species of grubs, a small population is no reason for concern. So a milky spore application would be a waste of cash and effort if you don’t have Japanese beetle larvae in your lawn. including Asiatic beetles, June beetles, and May beetles. Works Only Against Japanese BeetlesĪpart from Japanese beetle grubs, there are many more types of grubs that damage turfgrass. When the Japanese beetle grubs eat the spores, the spores reproduce, and as they reproduce turn the grub’s internal fluids into a milky consistency, which then kills the insect within 7 – 21 days.īut the best part is that once the grub dies, the spores inside of it are released into the soil and infect more insects so you kill many birds with one arrow. Milky Spore is a naturally occurring microscopic bacteria (Bacillus popilliae) that kills Japanese beetle grubs before they can grow into ravenous adults. Milky spore can be used in lawns as well as gardens without the fear of plant damage. ![]() ![]() Milky Spore is not harmful to the environment. Milky Spore will not, however, do much to control adult Japanese Beetles. Milky spore is a bacterium that attracts the Japanese beetle grub. It is available in both powder and granular form. Milky spore only kills larvae or Japanese beetles and remains in the soil for 2 to 10 years. Milky Spore Disease, while not toxic to humans or animals, is highly effective in killing Japanese Beetles. Japanese beetles at their immature stage feed on the roots of lawns, turf, and other grassy areas. Milky spore kills Japanese beetle grubs before they develop into adult beetles. This causes them to die and release more bacterial spores into the soil. Made from natural bacteria, the milky spore granules kill Japanese beetles in their grub phase by eating the grubs from the inside. Paenibacillus papillae bacterium is responsible for the milky spore disease, which is initiated when grubs feed on the roots of grasses in the soil and other plants and ingest the bacterial spores.Īfter the larvae of Japanese beetles eat the bacteria, their body fluids become milky.
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