Why can tillage spread perennial weeds?

Tillage tools can spread perennial weeds rapidly because they physically disturb and fragment the underground vegetative structures—such as roots and rhizomes—that these plants use to propagate.1

Unlike annual weeds, which primarily spread through seeds, perennial weeds are capable of regenerating from small pieces of their root systems. When tillage equipment cuts through these underground parts, it can break them into multiple viable segments and distribute them across a field. This process effectively acts as a form of vegetative reproduction, allowing the weeds to establish new growth in different areas and leading to the rapid infestation of an entire field.12