Such is the magic of this category of plants. Spring flowering bulbs include one of the earliest flowers to show itself in Northern gardens, the snowdrops. But while talk of "bulb plants" most readily calls to mind such early spring flowering bulbs (daffodils and tulips are other examples), not all bulb plants flower so early. For instance, Stella de Oro daylilies bloom in late spring and well into summer.
To learn more about spring flowering bulb plants, consult the following resource: