The pests and diseases treated by the leaves are simple and easy to use and are suitable for a small area of ​​a household. Here are some ways to treat pests with leaves. You may wish to try. Willow leaves: willow leaves contain licorice leaves, picking up some fresh willow leaves, mash, add water, soak 3 times a day or boil for 30 minutes, filter the juice after taking it, aiming at insect spraying. Willow leaf juice can control aphids, aphids, cabbage caterpillars; 5 times aqueous extract can also prevent rust. Mulberry leaves: The mulberry leaves contain elements such as adenine, choline, and fenugreekine. The fresh mulberry leaves are added 5 times to water. After boiled and filtered, 4 kg of water is diluted per kilogram of water, or 10 times water is used to soak the liquid. , can control locusts, spider mites; 15 times water immersion can inhibit the occurrence of rust. Pinus massoniana leaves: Pinus massoniana leaves contain turpentine oil, and turpentine oil contains stilbene and diterpene, which can kill insects. 10 kg of pine needles were sealed and soaked for 2 hours. The filtrated liquid can kill pests such as cockroaches and cockroaches. 30-fold impregnation of pine needles can inhibit the spore germination of Phytophthora infestans. Platycladus orientalis leaves: Platycladus orientalis leaves contain pineberry bittersin, oriental arborvitae, volatile essential oils, and tannins. Will Platycladus orientalis smashed, add the same amount of water rubbing, squeeze the original juice, watered 2 times can cure aphids, aphids, watered 10 times can prevent rust. Skunk Leaves: Skunk leaves contain saponins, tannins, essential oils and other substances. With its 1 kg of water and 3 kg of water, it is immersed and smashed, then filtered, and barreled to prevent worms and cabbage caterpillars. Tartary Buckwheat Leaves: Alkaloids contained in the leaves of Tartary Buckwheat have a strong insecticidal effect. 1 kg of leaves will be smashed, add 3 kg of water, soak for 6 hours, and filter to remove slag; or use bark, 1 kg of fruit, add 12 kg of water, boil for half an hour, and filter out the liquid. Each of the two stock solutions is watered 15 to 30 times and sprayed to control aphids, aphids, cabbage caterpillars, aphids, cockroaches, cockroaches, etc. Peach tree leaves: Peach tree leaves contain glycosides and hydroxyls and many organic acids. Peach leaves smashed, add water to stir after 10 times the filter; or 1 kg of peach leaves add water 10 kg, soaked for 24 hours, juice filtration, liquid spray, can control aphids, aphids, cabbage caterpillars, tapeworm and molluscs.