Set an empty coffee can about 10 feet away from the sprinkler. Turn on tap, and monitor time needed for the sprinkler to deposit enough water to reach 1 1/2 inches on a ruler dipped into the can (equivalent of what your plants need).
Set an empty coffee can about 10 feet away from the sprinkler. Turn on tap, and monitor time needed for the sprinkler to deposit enough water to reach 1 1/2 inches on a ruler dipped into the can (equivalent of what your plants need).