In November you can cut back the Michelmas daisies, and other varieties before they go to seed, and generally weed the garden. You may be surprised to find that blackberry has seeded itself in amongst the flowers. Take it up now before the roots take hold. It will be more difficult in the spring.
Now is a good time to plant the hollyhock you grew from seed in the spring, or last autumn. This should be several inches high now with roots several inches deep.