After I wrote about favorite watering holes for bees, several readers wrote to say their bees liked wet potting soil. One reader sent the following photo of four bees in a small plastic pot.
Yesterday I was able to capture three bees drinking from some wet woodchips that I had dumped on a woodland path. Another person said their bees liked wet coffee grounds. I put some out near the hives for a few hours but found no takers . . . swearing off the caffeine, I suppose.