Quick sprinkler head replacement saves water.
Step 1: Use Less Water in Your Garden, Replace Sprinkler Heads With This V-pattern Head
Many times garden water spray can be better directed and more efficient. Also, it's quite important to not spray the trunk of a tree continually; causes rot. This head spays in a v-pattern, like a squirt gun sprays left and right. Stream is reducible to about 5 feet in distance. Water only where you need.
Here is the part link:
I have not found them at Home Depot, though I wrote them a note, or Orchard Supply. I am a customer only of these companies.