Grass Changing Fast

When the snow finally melted in March, the grass courts were solid green from the winter long insulation of the snow. Then the exposed Poa annua began yellowing on the leaf tips and the bentgrass turned reddish purple (this is from lack of phosphorus in the cool temps - picture directly below) Then the weather started to warm a bit and the bentgrass turned back to green and began growing while the Poa annua remained yellow. Finally this week, the Poa annua started greening up (bottom picture.) Like almost every year, there are ever changing colors and growth spurts of the different species of grass on our courts. Next month will be no different, with the Poa annua producing seed.