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
Tagetes patula color animal-based textiles (wool, silk) without a mordant, but a mordant is needed for cotton and synthetic textiles. The whole plant is harvested when in flower and distilled for its essential oil. The oil is used in perfumery. It is blended with sandalwood oil to produce 'attar genda' perfume. About of oil can be extracted from of the plant yielding of flowers and of herbage. Tagetes patula Tagetes patula, the French marigold, is a species of flowering plant in the daisy family, native to Mexico and Guatemala with several naturalised populations in many other countries. It is widely cultivated as