The invention discloses a
plant-derived
pesticide which consists of the following raw materials in parts by weight: 95-100 parts of dalmatian chrysan themum, 90-100 parts of bay leaves, 85-95 parts of black
false hellebore, 85-90 parts of rhubarb, 80-90 parts of airpotato yam
rhizome, 75-85 parts of pungent litse fruits, 75-80 parts of turnip seeds, 70-80 parts of sessile
stemona roots, 65-75 parts of chaulmoogratree seeds, 65-70 parts of common fibraurea stem, 60-70 parts of amur corktree
bark, 55-65 parts of pepper, 55-60 parts of garden
balsam stems, 50-60 parts of China roses and 45-55 parts of rangoon creeper fruits. A preparation method of the
plant-derived
pesticide comprises the following steps: preparing each
raw material; mixing; breaking walls and performing ultrafine smashing; sieving by using a 300-mesh
sieve to obtain the
plant-derived
pesticide. The plant-derived pesticide has insecticidal and bactericidal functions, and has
special effects on stubby root nematodes and
fusarium solani (
fusarium). The plant-derived pesticide has no
side effect on soil and environments, is free from the side effects of
pesticide residue, environment
pollution and the like, and can be popularized and applied.