4,000 kilograms of fresh rose petals Did you know that to produce 1 kilogram of essential oil of roses, as much as 4,000 kilograms of fresh rose petals are needed? Normally about 70 kilograms of plant material go to make up 1 kilo of essential oils). So this explains why Rose Oil may seem a little expensive! Rose Options: vedaroma.eu/catalogsearch/result/?q=rose