On a May morning the glass dome of the Marjorie McNeely Conservatory at Como Park catches the low sun, and walkers circle Como Lake beneath trees just coming into leaf. Bluhm Brothers Landscaping carries that freshly rinsed green home to the yards of Saint Paul. Grass is mown to an even height, and the borders along sidewalks and planting beds are cut clean, so the whole lot reads as cared for from the street. Spring in Minnesota arrives in a rush after a long wait, and a lawn that starts the year in good order holds that momentum through August. You can see the result from the end of the block.