When the Campanile rings out over campus on a wet winter morning, the sound carries down across the Berkeley flats, past bungalows and backyard gardens still dripping from the night's rain. Bio-Friendly Gardens does lawn and garden care in Berkeley, a city that went to the trouble of pulling Strawberry Creek out of its culvert and letting it run open again through a neighborhood park. It is a good town for patient work: grass cut even, beds edged neatly, the walk swept clear of clippings. Winter is Berkeley's green season, and a lawn looked after through the rains steps into spring already thick and bright. By April, when the flowering plums along the side streets have let go of their petals, the yard simply looks right.