Down on the West Lebanon flats the Connecticut River runs wide and slow, and spring shows up there a good week ahead of the hills above town. Landworks Landscaping LLC starts the Upper Valley year in that window — cleanups first, then mowing, edging, and fresh mulch laid dark around the beds. River-bottom soil grows grass hard and fast, which is a pleasant problem to have. An edge cut true along a walkway will hold its shape the rest of the season. That is the part worth taking time over.