Landscape Maintenance and Renovation
Turf
Follow the one-third rule: never remove more than one-third of the leaf blade at a mowing. Height depends on species - tall fescue 3–4 inches, hybrid bermuda 1–1.5 inches. Raise the height in heat and stress. Manage thatch, aerate compacted ground, and base fertilization on a soil test rather than a calendar. Overseeding renovates thin stands; full renovation means killing or removing the old stand, correcting grade and drainage, amending, and replanting.
Woody plants
Distinguish thinning cuts (remove a branch to its origin; encourages light and structure) from heading cuts (tip removal; stimulates dense regrowth). Renewal pruning removes the oldest stems at the base. Time pruning by flowering habit: spring bloomers after bloom, summer bloomers in dormancy. Avoid heavy pruning of maples and birches in late winter/early spring if bleeding is a concern, and remove no more than about 25–30% of live canopy in a season.
Worked example
If a mowing leaves clippings in windrows and scalps the turf, the cut is too deep. Cutting 4-inch grass to 3 inches removes 25% - acceptable. Cutting 4 inches to 2 inches removes 50% - a stress event that invites weeds and disease.
Traps
Shearing every shrub into meatballs; fertilizing cool-season grass in summer heat; mowing too short in shade; overwatering on a fixed schedule instead of auditing the irrigation system.