In preschool, we learn about seasons by assigning some simple characteristics:Winter: Snow and snowmenSpring: Flowers and green grassSummer: Hot sun, thunderstorms and swimming poolsFall: Colorful leaves and pumpkinsIt all seems so clear cut, with nice lines dividing up each season into clear periods of time. In reality seasons aren’t that clear cut. Time is a continuum — a continuum that stands out to me especially in my garden, where...