When I arrived last Thursday afternoon the scene at the school gardens of the  Discovery School at Four Corners were enjoying controlled chaos. Several teachers were staying after school to divide and pot up perennials from the butterfly garden. “Is this Echinacea or a rudbeckia?” one teacher asked and her spade bit into the center of the clump. “Don’t pot the dill! It an annual,” another shouted. “Are you sure these are all bee balm?” another asked…