Rose in greenhouses, and in warmer countries they may also be grown under cover in order to ensure that the flowers are not damaged by weather and that pest and disease control can be carried out effectively. Significant quantities are grown in some tropical countries, and these are shipped by air to markets across the world. Some kind of roses are artificially coloured using dyed water, like rainbow roses. Rose perfumes are made from rose oil (also called attar of roses), which is a mixture of volatile essential oils obtained by steam distilling the crushed petals of roses. An associated product
Ganjam Kewda Flower of an essential oil) may be either a primary product from low quality flowers collected during hot summer, or it may be a secondary product from Kewra Ruh or Attar production. Kewra Jal is also called Kewra water. Kewra Jal is about 0.02% of Kewra oil. 24 flowers can produce one pound of primary hydrosol. The hydrosol is used to flavor popular sweets such as Rasgulla, Rasmalai, and Ghulab Jamun. It is used to flavor rice dishes such as biryanis. The kewda flower and its root, produced after processing the flowers, is also unique to the region. The flower grows