How does a systemic pesticide function?

A systemic pesticide functions by being absorbed into the plant's physiological systems, such as its sap. This allows the pesticide to move throughout the plant, reaching tissues and organs that may not be directly sprayed. The primary target for systemic pesticides is often sap-sucking pests, including aphids, whiteflies, and spider mites, which feed on the plant's fluids. As these pests ingest the plant's sap, they also consume the pesticide, leading to their control or eradication.

This method of action is particularly beneficial for managing pests that are well-protected by plant structures or those that can evade contact pesticides by hiding in small crevices or within the plant tissues. By integrating directly into the plant, systemic pesticides offer a broader range of protection and can be more effective in certain scenarios compared to non-systemic options.