Thrips are tiny insects that thrive in gardens located in warm climates. On average they are about one millimeter in length, but don't let their size fool you. Thrips attach themselves to your plants and suck out the juice inside, leaving your beautiful flowers and vegetables brown, dry and deformed. Fortunately, you can use nematodes to protect your garden from this nasty pest. Nematodes are tiny, worm-like parasites that kill off destructive bugs but are harmless to humans, animals and the environment.
Purchase beneficial nematodes from a reputable company. There are nematodes that help a garden and nematodes that harm a garden, so double check to make sure you order the right ones.
Fill a watering can with water, and add the package of nematodes. Stir the water with a mixing stick.
Let the nematodes soak for an hour. Stir the water every 10 minutes to ensure the nematodes float around rather than sink to the bottom.
Water the garden immediately before you add the nematodes. The soil must be moist for them to be able to move around and destroy thrips.
Pour an even layer of water throughout the garden. Be sure to pour the water directly on the soil, as the nematodes will not be able to work if they get stuck on the leaves of the plants. Stir the water every 10 seconds during the process to ensure the nematodes are mixed in with the water.