To keep a Christmas wreath fresh, follow these steps: 1. Keep it in a cool, dry location away from direct sunlight. 2. Mist the wreath with water every few days to keep it hydrated. 3. Place the wreath in a container filled with water or hang it upside down over the container to ensure it doesn't dry out. 4. Monitor the moisture levels in the wreath and mist as needed. By following these steps, your Christmas wreath will stay fresh and vibrant for the entire holiday season!