The 3-hour gardening rule is an informal guideline that your garden should need no more than about three hours of upkeep per week, and that you plant with that cap in mind. Some gardeners use a second version: stop any single session at three hours, since tired pruning and digging is where most strains and mistakes happen.
To hit a three-hour week, choose slow-growing shrubs over fast hedges, mulch beds 2 to 3 inches deep to suppress weeds, group plants by watering needs, and shrink high-maintenance lawn. A border of regionally native plants typically needs about a third of the care of a formal annual bed.
Low-upkeep can still look designed. Try a xeriscape or naturalistic concept on your own yard with AI landscape design to see the trade-off.