Once planted, Narcissus spp. are low-maintenance plants that will generate an abundant display of fresh flowers through late winter and spring. Plant them in autumn, in moderately fertile, moist but well-drained soil, where they will receive sun for most (if not all) of the day. The shape and size of daffodil bulbs will vary from species to species, but they should all be planted approximately 10-15cm (4-6in) deep, and with their pointy tips uppermost. planting, water in well and apply a general-purpose fertiliser to encourage the development of strong roots.
In spring, after the flowers have faded, nip off the spent flowerheads, but the stems and leaves should be allowed to die back naturally. In this way, they can then draw their energy back down into the bulb, where it can be stored for the next year's growth.
Daffodils also do extremely well in pots or window boxes filled with a good-quality potting compost. For a one-off seasonal treat, they can be planted shallowly and more densely, and perhaps topped with seasonal bedding such as winter-flowering pansies and primroses. After they’ve flowered they can then be re-planted as above in the borders or lawn.