Research v'as titled " The Study of Stdrter Solution Applicqtion and Seedling Trqnsplanting age on Pepper (Capsicun annum L.) had condtrcted at The experiment gorden, Agriculture Faculry of UMY. The research aimed to knoh, the efect ofstarter solulion qnd seedling transplanting age on €yoylh of Pepper Factorial experimental methodwas used in lhis research with the environment design was completelv randomized design (CRD). The frst factor was concentation of starter solution, consisted ol 0, 5, 10 and l5 %, * hereos the secondfaclor wos seedling lransplanting age, consisled of 3, 4, 5 and 6 *'eeks. Three times for each tredtment as replications.Research result showed that plant grouth of Pepper no affected by starter solution applicqtion and seedling transplantitg age. The best seedling transplanting to.field on three weel<s age.