Between an hour or a two hour visit every week/fortnight (All year round if needed) I work throughout the year to give my customers the garden they can relax in by keeping it looking tidy. It could be: keeping the weeds down, pruning some shrubs, deadheading the roses and cutting the grass and/or adding a bit of colour by planting new shrubs and bedding plants (or bulbs in autumn for the spring), picking up any rubbish that may of blown in, giving your hedges a little trim, or laying decorative bark chippings or pebbles. Not forgetting about raking leaves up at the end of season.
Your garden will never be totally weed free, and some gardens can take a few visits to get on top of, but I will always do my best within the time available. So in your free time you can just sit back and enjoy your garden.