Like Dan, I have been mowing my meadows. I mow three of the meadows at this time of the year (and another one in July). Many of the Preserve Managers have to mow their meadows during winter when the ground is frozen (if there is no snow). Since the Mariton meadows are on top of the "mountain" and well drained, I have the luxury of being able to do it whenever (if there is no snow).
I like being able to wait until the end of March. It allows the flower and grass stalks to stand during the winter. This structure provides food and shelter for rodents and birds, and hunting cover for predators during the winter (especially if there is snow!). We will be without that structure for a few weeks, but you will blink and it will suddenly be green. It is amazing how fast it will grow back (considering that everything in the Before photo grew in 6 to 7 months).