They need several weeks to establish roots however. Some bulbs that are especially frost sensitive will do well with a layer of mulch. Bulbs planted in grass need an average of six weeks for die back. If this interrupts your mowing schedule, perhaps opt for taller bulbs planted along the edges of grassy area. Be careful with chemicals.
Bulbs are very sensitive to most herbicides.
Cluster-forming bulbous plants, such as daffodils, can be split after they have rooted a few years. This encourages growth in Galanthus , Narcissus, Anemone , crocus and tulip among others. Plants that form rootstocks can be spurred to regrowth after several years through tillage.