Abstract: Background and Objective: Coconut is fondly called the tree of life and recent studies have indicated that the seedlings can be improved by addition of inputs. Therefore, main objective of the study was to find the relation between the coconut seedling and rock phosphate. Materials and Methods: Rock phosphate as a source of phosphorus fertilizer for coconut (Cocos nucifera L.) seedlings was evaluated for twelve months (June, 2013-June, 2014) at NIFOR Main Station. The study conducted in two tasks was laid out in a completely randomized design (CRD) and consisted of 4 levels of rock phosphate namely 0, 100, 200 and 300 g in 5 replications. Data were collected on plant height, stem girth, leaf area and number of leaves at 4, 8 and 12 MAPs (months after planting). Results: Results showed that application of rock phosphate with a basal application of NPK 15:15:15 gave better performance than application of rock phosphate with a basal application of urea throughout the study period. Conclusion: The study concludes that rock phosphate can be used to raise healthy and transplantable coconut seedlings in a naturally leached sandy soil with minimal use of NPK fertilizer in a cost effective way.