Foto de stock - Metin Saruemin, 31 is one of the seasonal workers in Damascena Rose Distillery near Scobelevo, Kazanluk region. He is unloading rose blossoms from a truck at the distillery.Whilst the harvesters are picking the flowers, other workers carefully transfer the flowers from the baskets to the transportation sacks where they are weighed, and all the relevant details are recorded since harvesters are paid by the weight of flowers picked. Each sack weighs approximately 25 kilos when full. The total yield of oil will depend upon several conditions; climate, the time of the harvest, condition of the flowers and the method of distillation. During the middle of the harvest period the yield is higher than at the beginning, and mild weather will result in a further increase in the oil produced. On average, Rosa Damascena will yield 1 kilo of oil per 4,000 kilos of flowers using modern distillation processes. Under very favorable conditions only 2,600 kilos of roses may be required to produce 1 kilo of oil, whereas under less favorable conditions up to 8,000 kilos of flowers may be required to produce the same amount of oil.