Best Friends who love each other like brothers and a red fern

Johnny Cade and Dally Winston were best friends ever since they first met. they loved each other like brothers. when Johnny dies Dally is hurt and heart broken and he promised Johnny that he would never forget and he would see him everyday. one day when Dally comes to visit Johnny's grave he finds a red fern growing on Johnny's grave. and he remember reading where the red fern grows to Johnny.