Children's gardens

There's been an explosion in recent years in children's gardens -- it's definitely a good thing, when these gardens encourage exploration of the world of plants and nature. 

I visited a delightful Children's Garden at Phipps Conservatory this summer (in Pittsburgh, PA).

Children's gardens that are full of fabricated stuff don't appeal to me, but the small pocket garden adjoining the conservatories at Phipps  was totally appealing.

These boys were using the water feature to fill up their buckets (one of them actually watered my feet, hmm).  But they were exploring the environment of perennials, a nicely done concrete tree (with informative nooks), and various other exploratory venues.