The best time to plant daffodil bulbs is in early autumn, typically from September to November. This timing allows the bulbs to develop roots before the ground freezes and the colder temperatures set in. In warmer climates, planting could be extended a bit later, even into December, as long as the soil is not frozen. If planting is missed in autumn, bulbs can still be planted as late as January or February with some extra care, but they may take longer to establish and flower. Daffodils prefer well-drained soil and a location with full or partial sun for optimal growth.