I recently purchased a home in January. Now that it's Spring the grass is starting to come through. However, I've noticed a variety of grass patches of different colors and lengths before I mowed for the first time:
After reading online it seems like if your grass is too yellow after mowing it means you cut it too low, but the rest of my lawn is perfectly fine, so that leads me to believe that this grass is something that shouldn't be there.
Should I dig these patches up and re-seed? If not, how should I deal with these?