I believe this refers to the tradition of dressing the wells in the Peak District, Derbyshire, UK. Several villages in the area "dress" their wells - springs - with tableaux made from flowers, often referring to Bible stories, but not always. See here for details of local well dressings.

Anyway, I bought my ticket last week though it hasn't come yet! Lau, Karen Tweed and Les barker are not to be sneezed at!