The Wetherby Cranberry Company marsh is a third-generation marsh owned and operated by the Van Wychen family who produce their own cranberry wine and sell cranberries as fresh fruit.  They host Personalized Cranberry Tours, Cranberry Blossom Day (held annually the last Saturday of June), and Harvest Days.

At both events, visitors to the marsh stand along the bank of a cranberry bed while family members explain how berries grow and are harvested. During Harvest Days, visitors can watch harvesting firsthand and purchase freshly harvested berries that day in the sorting warehouse.