LEWISTON, Minn. —A citizen who knows the law about picking flora called the Winona police dispatcher about people picking watercress at Farmers Park. A state wildlife warden was dispatched.. No, no, the poachers were told, the law forbids picking flora on state property. The group was told to move along.

Prolific in Garvin Brook. Watercress is an aquatic flowering relative to cabbage. One of the oldest known leaf vegetables consumed by humans. Valued still, millennia later, especially as a gentle topping for salads. It’s a perennial native to Eurasia. Abounds also in Garvin Brook at Farmers Park.