An adjustable inverted-sprinkler system for irrigation. The system includes a sprinkler support base fashioned to accept and retain plurality of sprinklers in a generally inverted orientation. The sprinkler support base is supported by a frame having adjustable vertical, horizontal and slanted support members to allow precise direct, efficient and uniform watering from above. The frame is coupled to a base which allows it to be securely grounded during use and quickly moved as needed by the user.