How To Test Your Irrigation Output
To test your sprinkler output, use empty tuna fish cans placed around the yard. Run your sprinkler zones 5 to 10 minutes for fixed spray heads (12 to 20 minutes for rotating heads) and measure the results in the cans with a ruler. Extrapolate necessary run times accordingly.
Always use the Cycle and Soak method to water. Run your system for short times, but multiple start times on your watering day. That method will eliminate runoff.
Mature plants in bedding areas should not be watered as much as the turf grass. Mature plants need very little help (help in addition to rainfall) until we reach the hot part of the summer. Don’t make the mistake of drowning your bedding plants while watering your lawn.