Quote:
Originally Posted by maybe
Has anyone raised the height of one of those donut-shaped things that surround sprinklers? I assume they are to protect sprinkler from car tires, but some are depressed as low as sprinkler head.
Are they short and easy to dig out, and then replace after inserting extra dirt or gravel, etc.?
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The donuts do two things, they tend to keep the grass from growing over the sprinkler head and to protect the head from lawn mowing equipment. A car driving over the head most likely will damage the head.
The donuts are easy to pry out. Once out trim the grass around the sprinkler head then add soil to raise the donut. Do not raise so high the the mower will hit the donut. Really quite easy.
Here are some tips:
How to Prevent Grass From Growing Over Sprinkler Heads | eHow.com
http://www.lawnsite.com/showthread.php?p=4566924