I have not found growers in Rajasthan but in Delhi and Luckmow
Lucknow and kannauj
There is a single market in Lucknow. The major flowers traded in this market are roses (red rose used in garlands and pink rose petals used for the extraction of oil and in the manufacture of gulkand) and three varieties of jasmine, marigold and sunflower. The commission agents in Kannauj market deal only with pink rose petals supplied to the perfumes. The flowers supplied to this market are produced within a radius of 10km. Some of the producing areas supplying flowers to this market are Alamnagar, Mariyabad Road, Pataura, Narauna and Baravan. The major modes of transport used are cycles, tempos.
The only flower market in Delhi is situated in Fatehpuri near Chandni Chowk. The major flowers traded in this market are roses (red roses and rose petals), marigolds, jasmine and gladioli. The flowers come from producing areas around Delhi within a radius of 75 km. Some of these producing areas are Fatehpur Beri, Mehrauli, Farukha Nagar, Chattarpur, Ghaziabad, Faridabad, Gurgaon and Muradnagar.