this is the time of year that we in the north start noticing the difference between north facing slopes and south facing slopes. between north facing walls and south facing walls. between black bottomed bays in lakes (that soak up the heat of the sun and attract fish) and sandy bays (that stay cold). these grasses were up against a south facing wall that has been absorbing and reflecting the spring sunshine for only a few days. these grasses are several weeks advanced on their brethren growing on the opposite side of the same building.