installing sprinklers??

not at all expensive,if you make your own or branded sprinkle to you make your own with rotator purchase or you go for branded and better choose the force of water wets all the ground,that sprinkles all around i don't know your square area of the garden i think 2-4 is enough,if the sprinkle distance is more,with that you save water as well you wet all the ground the plants to grow nicely.any more question please ask with my knowledge i help you,send photo or load photo if you have mid size yard scanned in photo