Dr Greenthumb was fumbling around in the garden one afternoon when one of his new apprentices came down the path bearing a bag of mulch. He walked over an errant choker vine tendril and before the good Dr could do anything, became it's lunch. This caused the good Dr to consider making some hats for his assistants that would augment their skills of perception and knowlege of plants. As he was creating these useful hats, he added a few things to further help out in the garden.