Irrigation water!
 

We've noticed that a couple of our flowers that get hit by the irrigation water look like they've been sprayed with Roundup. Anyone else have this problem?

If you're spraying Round-Up near sprinkler heads, you have to be careful to not hit the head or thoroughly clean it after spraying. It can definitely do a number on plants/grass while watering. Usually is okay if it rains shortly after spraying, but I wouldn't take the chance. Really is best to hand pull the weeds and grass in the donut holes.

Maybe too much water.

being hit with too much water pressure can have the same effect.. They get "bruised". Could this be a location problem?