Gardenia jasminoides

Common Name(s): Cape Jasmine

Gardenias are beautiful, shrubby evergreen houseplants well loved for their creamy, fragrant blooms. The shrub that can grow 6-8 ft high with almost equal spread. The leaves are elliptic-oblong, glossy and leathery. Mature shrubs usually look round, and have a medium texture. It blooms in mid-spring to early summer over a fairly long season. The flowers are white, turning to creamy yellow as they age, and have a waxy feel. They are double in form, and can grow as large as 10 cm across. They have a powerful, sweet fragrance, and can perfume an entire room.
References
1. http://www.flowersofindia.net/catalog/slides/Gardenia.html
2. https://plants.ces.ncsu.edu/plants/gardenia-jasminoides/