This study aims to determine the effect of organic fertilizer type and varieties on the growth and yield of cucumber (cucumis sativus l.). the research was conducted at the faculty of agriculture experimental farm syiah kuala from october 2013 to january 2014. this study used a randomized block design 3 x 3 which consist of 2 factorial with three replications. the first factor is the variety of cucumber varieties misano f1, oris f1 and f1 hercules. the second factor is the type of organic fertilizer. organic fertilizers used are compost, duck droppings and cow dung. the parameter observed are plant height, stem diameter, fruit diameter, fruit length, fruit number for plant, fruit weight and yield potential. best plant growth of cucumber varieties found in misano f1 while cucumber crop yields tend to be better found in cow manure treatment. there is a significant interaction between varieties and organic fertilizer on plant height age 20 days after planting. the best growth observed in