Continue dead heading annuals, perennials and roses to keep them blooming until frost.
Make your last trim on shrubs like boxwood, holly, and loropetalum so that the new growth can harden-off before the first frost.
Now is a great time to cut back you oakleaf hydrangeas if they have gotten too big. Pruning any later will be sacrificing next year’s blooms. Cut they back as hard a necessary accounting for new growth to emerge.
Stop fertilizing most trees, shrubs and perennials from August to November so that new growth can harden off before frost. Fertilize roses one last time to encourage new growth and late summer/early fall flowers.