THE summer is just the time for nature study. We often walk the same same stretch, and it's fun to notice different things each time then draw it and maybe read up on it at home. Today we looked at trees, and Emma especially liked a tree that she said had fairies all over it. The leaves were feathery and "nervous" (they slowly closed up when touched). The "fairies" are the white and pink feathery blooms. It has a smooth bark, and in the autumn has long (30cm or so) brown seed pods. It was a Silk Tree, sometimes called Mimosa, but - curiously - dubbed "foamy" by the children. It grows all over the place here in the south US - beautiful, but invasive. Since then, spotting "foamies" while we walk or drive has become a favourite pastime.