Yellow Leaves on Hibiscus

Question

These were just transplanted from pots.

Answer 1

Most likely this is just a normal reaction known as transplant shock. Here is an article or two that you may find helpful: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/answers-to-what-causes-hibiscus-leaves-turning-yellow.htm
https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm