My friend Selenak just posted some photos of Easter well-dressing in Germany.  The wells look lovely.

English well-dressing is mainly a Derbyshire tradition and isn't necessarily attached to Easter - Whistun is a popular date. 

I remember when I was in my teens I went walking in the Pennines and just happened by good fortune to hit a week when many villages were dressing their wells.  It's a lovely tradition and actively carried on today.