Planted about 2 months. Leaves well and outside leaves are dark green, but inside leaves are turning yellow. Plant is outside, partial shade, on the parkway.
Yellow Leaves on Gardenia
Certified GKH Gardening Expert
It could be suffering from shock, in which case this article should help you: https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm
For additional suggestions, this article will help: https://www.gardeningknowhow.com/ornamental/flowers/gardenia/helping-a-gardenia-bush-with-yellow-leaves.htm