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
Attar of Nishapur of further products of his pen: He also states, in the introduction of the "Mukhtār-Nāma", that he destroyed the "Jawāhir-Nāma' and the "Šarḥ al-Qalb" with his own hand. Although the contemporary sources confirm only `Attar's authorship of the "Dīwān" and the "Manṭiq-uṭ-Ṭayr", there are no grounds for doubting the authenticity of the "Mukhtār-Nāma" and "Khusraw-Nāma" and their prefaces. One work is missing from these lists, namely the "Tadhkirat-ul-Awliyā", which was probably omitted because it is a prose work; its attribution to `Attar is scarcely open to question. In its introduction `Attar mentions three other works of his, including one entitled