When to plant my gardenia rootings?

I was able to get a bunch of fresh clippings from about 4 year old gardenia bushes in May/June. I rooted them in vases of rain water for over a month and recently have about potted them (1-2 per gallon size pot) and have about 30 total pots. (they are about 10-12" tall right now) keeping them moist with collected rain water and they are thriving. Should I continue with my original plan to keep them in pots until the spring of 2023 to plant in my backyard? I plan to have them create a privacy hedge along my black aluminum fence.