The experiment was conducted during the year 2021-22, at Fruit Research Farm, Rama University, Kanpur. with the object to study the success and initial growth performance of grafts of some important varieties of mango under net house condition. The experiment consists of ten different varieties of mango Amrapali, Kishan Bhog, Gulab khas, Kesar, Totapuri, Dasheri ,Malgoa , himsagar ,Nisar Pasand & Bombay Green as treatments and replicated thrice in Completely Randomized Design (CRD). The results of present investigation clearly showed that, grafts of different mango varieties studied had a significant influence on the maximum values of growth parameters like Graft Diameter (23.80 mm), scion diameter (17.35 mm), rootstock diameter (20.06 mm), length of grafted plant (88.71 cm), survival percentage at 150 DAG (90.00%) were recorded maximum in the graft of variety Dasheri while Stionic ratio was found best in the graft of variety Gulab khas (0.90)