How can I properly care for geraniums over winter to ensure they survive and thrive until the next growing season?

To properly care for geraniums over winter, you should bring them indoors before the first frost, place them in a sunny spot, water them sparingly, and avoid overwatering. Prune any leggy growth and remove dead leaves to promote healthy growth. Keep the temperature around 60-70F and protect them from drafts. With proper care, your geraniums should survive and thrive until the next growing season.