This study aims to know the effect of organic mulch and application time of Phonska fertilizer on the growth and yield of peanuts. The study was conducted in Bulotalangi Timur Village, Bulango Timur Sub-district, Bone Bolango Regency. This Study applies factorial randomized blok design (RBD). The first factor is mulch (without mulch, sawdust, and banana stem), and the second factor is the application time of Phonska fertilizer (1 and 2 applications) LSD test will be carried out with the level of 5%. The finding shows that banana stem organic mulch has a significant effect on the growth and yield of peanut plants, namely on plant height (3 WAP), number of leaves (1 and 2 WAP), and dry weight of 100 seeds. Furthermore, the application time of Phonska in 2 and 2 MST has a significant effect on seed weight. Organic banana stem mulch is the best treatment compared to no mulch and sawdust mulch.application time of Phonska fertilizer in 1 MST is the best treatment compared to application time in 2 and  3 MST. In summary, there is an interaction between the organic mulch treatment and the application time of Phonska fertilizer on the growth and yield of peanuts plants at the dry weight of 100 seeds.