Variation in physical characteristics and ascorbic acid (vitamin C) concentration of rosehips collected from various localities of Murree Hills was determined at different harvest time, site of collection and storage time. Concentration of Vitamin C was found in the range of 2000-2500 mg/100g. Rosehips possessed fruit weight (4.3 to 6.2gm), seed weight (2.3 to 3.3gm), pulp weight (2.0 to 2.8gm), pulp seed ratio (0.66 to 0.86), average length (10.14 to 15.33mm) and average diameter (8.5 to 10.25mm). Vitamin C concentration increased from October to November followed by gradual decrease from the month of November to February (22.45%). Samples stored at room temperature showed rapid reduction in Vitamin C (24.49%) and those stored under controlled conditions (25oC and 50% RH) showed slight reduction (6.49%).