Reunion and Buffalo Run were shortgrass prairie inside living memory, and in April you can still find the seam — new sod meeting old grassland, young trees staked against a wind that has never had anything to slow it down. ProTech Development Lawn-Care tends the yards on those new streets as they come out of dormancy, mowing, trimming and edging once the grass turns and hauling off what winter left behind. Spring on the Front Range is a negotiation: seventy degrees on Tuesday, four inches of wet snow on Thursday, and grass that grows in bursts between the two. Keeping a first-year lawn even and healthy through that takes steady, unglamorous attention. The reward comes in May, when a whole block of raw new yards finally looks like it belongs to the people living in it.