Optimization of cashew nuts (Anacardium Occidentale L.) has not been achieved properly due to the influence of climatic factors such as rain and cashew nut trees have not been fertilized. For this reason, efforts are needed to increase cashew production through fertilization. This study aims to examine the effect of the application of various types of fertilizers on the flowering and yield of cashew nuts. The research was conducted from June to September 2022 on cashew farms in Ngadirojo Subdistrict, Wonogiri Regency, Central Java. The method used was a completely randomized design (CRD) 2 factors with 3 replications. The research used 2 methods: diameter of the tree trunk (35 cm - 103 cm/small and 108 cm - 173 cm/large). The second factor was the dosage of various types of (2 kg/solid chemical plant, 50 kg/solid organic plant, 6 ml/L liquid organic fertilizer (60 ml/plant), 4 ml/l liquid chemical (24 ml/plant ), solid organic (25 kg) and solid chemical (1 kg) (25 kg liquid organic + 1 kg solid chemical/plant), and 0 kg/plant). The results showed that tree trunk diameter and various types of fertilization increased yields on flush length, bouquet length, number of fruits per panicle, dry weight of raw nuts, cashew kernel weight, kernel width, and kernel length of flowering and seed yield except for the number of flowers per stalk, fruit set, and fresh weight raw cashew nut.