At Parker the Colorado runs a deep green between the Buckskin Mountains and the Arizona bank, and the cottonwoods along the strip take everything this valley's heat can hand them. Parker Tree Services keeps them in hand — trimming and pruning for clearance and health, removals when a tree has gone hollow or started leaning toward a roof. Summer work begins in the dark and ends by mid-morning; the rest of the day belongs to the water. Late-season storms push up the valley and lay limbs across drives and fences, and clearing them is same-week business. A river-town yard that has been properly worked feels shaded and open at the same time, which is the whole trick.