There is still time to plant spring flowering bulbs until the ground freezes. You’ll be happy you planted some extras when they bloom early next spring.
If you cleaned out your annual pots you can recycle both the old plants and the soil, by either putting them right on your gardens or by putting them in your compost pile.
You can significantly reduce the number of overwintering insect larvae by turning the soil in the flower beds now, especially where geraniums and petunias were grown last year.