Is it possible to root a gardenia plant from another gardenia plant?
How Can You Root a Gardenia From Another Gardenia Plant
Certified GKH Gardening Expert
Yes, you can root the cuttings. Cuttings can be taken any time during the year, but they are most successful in June, July, and August. Here is more information on that: https://www.gardeningknowhow.com/ornamental/flowers/gardenia/propagating-gardenias.htm