The phrase "a growing variety" is correct and usable in written English.
It can be used to describe an increasing range or assortment of items, options, or categories in a particular context.
Example: "The market now offers a growing variety of organic products, catering to health-conscious consumers."
Alternatives: "an expanding range" or "a diverse selection".
Economic forecasters have a vast array of information to work with and a growing variety of techniques.
Now it is home to a huge variety of resident and migratory birds and other wildlife, and a growing variety of native plant species.
Tiny, inexpensive semiconductor lasers read data from a growing variety of optical compact disc formats to play music, display video recordings, and read computer software.
The rapid expansion of specialization produced a growing variety of specific academic degrees in American, British, and other English-speaking higher education systems in the 20th century.
Ultrasound (US) is simply sound pitched above human hearing that is used at present for a growing variety of purposes in diverse areas.
Vendors have turned the square into a market, selling lupini beans squirted with lime, hot tea, pudding, and a growing variety of souvenirs: flags, T-shirts, hats, necklaces and stickers.
As a fast growing variety this tree can reach almost full height in only a couple of decades.
Through the introduction of a steadily growing variety of preclinical test models drug development and biomarker research has advanced.
A rapidly growing variety of new cars come with such radios as factory-installed options, including a majority of General Motors vehicles.
The Verizon family of companies offers a wide and growing variety of free services, including The Huffington Post, MapQuest, and our new mobile video service, go90.
Due to the involvement of the mitochondrion in many essential metabolic processes it is implicated in a wide and growing variety of disorders and pathologies [ 1].
