February is a great time to seed lawns. The seed will lie on the ground until the soil temperature is warm enough for it to germinate, and late winter/early spring rains will provide moisture for germination.
If the grass seed begins to germinate this month, apply a seed starting fertilizer.
Avoid walking on your lawn on frosty, frozen mornings. The crunchy sound and feeling under your feet is caused by the breaking and crushing of brittle grass blades.