Beneficial nematodes have been shown to be as much as 96% effective against Japanese beetle grubs in field studies. Although many species of beneficial nematodes are available, Heterorhabditis bacteriophora (Hb) nematodes are most effective against Japanese beetles, European chafers and other grubs that are lawn pests.
How do you use nematodes for grubs?
You can apply them using a watering can, sprayer and hose attachment or misting system. It's a good idea to apply your nematodes during low light periods (morning or evening are best). It is very important that you mix and apply your nematodes quickly so they don't 'expire' in the can.
How long does it take nematodes to work?
How Long Does It Take To See Results? Usually 3-7 days, with maximum effect occurring over 2-4 weeks. Nematodes disintegrate the pests from the inside out, so you will not see dead insect bodies as you would with a chemical knockdown.
Are nematodes the same as grubs?
What are nematodes? Nematodes are microscopic roundworms that move within the soil, in search of a suitable host to enter. Once they penetrate and enter the host (like a curl grub), they release a specialized bacteria that kills the grub – so that they can feed on it, and reproduce!
Do beneficial nematodes really work?
Beneficial nematodes are natural and effective for getting rid of target pests, but they have disadvantages, too, including: They only work for pests in your soil. They will not harm pests that live and feed on plant leaves (unless those pests have a soil-dwelling stage in their life cycle).
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