Daffodils are a common springtime flower. Daffodils grow from bulbs, which store energy so that the shoot can get off to an early start.
Daffodils grow naturally in woodlands, where they produce leaves and flowers before the deciduous trees get leaves and shade out the ground.
They are a good example of a plant that makes use of the same piece of land as other plants, but uses it at a different time of the year.
By the time the deciduous trees have come into leaf, the daffodils will have put energy back into their bulbs for next year and their leaves will already have died back.
Another example of a plant that behaves this way is a bluebell. Bluebells flower later than daffodils.