Sounds like a wonderful activity for a local church to sponsor!
World Naked Gardening Day (WNGD) is an annual international event celebrated on the first Saturday of May by gardeners and non-gardeners alike. WNGD has become an annual tradition that celebrates weeding, planting flowers and trimming hedges in the buff. While it’s linked to a movement of nudists who promote wholesome and unashamed acceptance of the human body, the day is meant to be funny, lighthearted and non-political, founders say.
https://en.wikipedia.org/wiki/World_Naked_Gardening_Day