Mar 13, 2015. This bulletin is to remind marijuana businesses that pesticides and agricultural chemicals must be used in accordance with the product label and with all applicable federal, state, and local laws, rules, and regulations. Improper use of pesticides on marijuana can raise serious public health concerns.
1. An inborn pattern of behavior that is characteristic of a species and is often a response to specific environmental stimuli: the spawning instinct in salmon; altruistic instincts in social animals. 2. A powerful motivation or impulse.
Definition of instinct for English Language Learners. : 1  a way of behaving, thinking, or feeling that is not learned : a natural desire or tendency that makes you want to act in a particular way. : 2  something you know without learning it or thinking about it. : 3  a natural ability.