[Pinball wizard]

Originally Posted by Allen Dronsfield

I clean out all the dirt down to the elbow or tee in the line which the raiser comes up from, then I cut 4" pvc pipe lengths from the base of the raiser to the sprinkler head. There is no dirt around the sprinkler head for weeds to grow from. It also has another advantage by using the 4" pvc pipes. When you have a leaky fitting below and or replace the popup sprinkler you don't have to dig it out. It is easily replaced. The donut will sit nicely on top of the pvc raiser.

Very good idea!