Hello Shree,
There are farmers who cultivate dutch roses in open field, but it is not very profitable as the yield is low, not very high quality of flowers achieved. Since the rootstocks/ cuttings are expensive it is better to utilise them efficiently make the best use of money you spend on cuttings. There are many advantages in cultivating roses under greenhouse. Uniform flowering, less number of pest and diseases, higher yield, closer spacing, better colour development, sprinklers can be used for control of temperature. This is highly demanded in the market for producing new products like perfumes and other cosmetic products. Further, this is also used for decorating the ambiance of any place. The entire range of Dutch rose is broadly acknowledged for high fragrance, purity, freshness, and purity. In order to ensure full growth of product, high quality bio-fertilizers can also be used.
Regards
Ashwini S