In trials with potted rose, phlox, coreopsis and pasque flower, the treatment killed or reduced the growth of annual bluegrass, common chickweed, creeping woodsorrel and liverwort.
Creeping liverworts are here also in abundance, and several rare species of fungi, exceedingly small, and frail, and delicate, as if made only for beauty.
The general brown and purple of the ground, and the dead vegetation of the preceding year, give place to the green of mosses and liverworts and myriads of young leaves.
Paleobotanists are still debating what exactly the first type of land plant actually was, but they agree that it was small and moss-like, probably some kind of green algae or liverwort.
Despite their unfortunate name, liverworts do tons of cool, useful stuff, like helping rocks break down into soil, decomposing logs to return nutrients to the ground, and serving as materials for bird nests.