The grass radical is the three strokes at the top. Draw the horizontal one first. (Although drawing the first vertical one before the horizontal one does produce rather a nice shape!)
The sound is coming from 化 huà as in 化学 huàxué 'chemistry'.
The sound is coming from 早 zǎo 'early'.
The sound no longer comes from doesn't have much to do with 余 yú 'surplus'.