My Gardenia veitchii why are the leaves turning yellow?

Question

I have new growth and my gardenia is about to bloom.

Answer 1

There are several reasons for yellowing leaves. Here is an article that you may find helpful: https://www.gardeningknowhow.com/ornamental/flowers/gardenia/helping-a-gardenia-bush-with-yellow-leaves.htm

Answer 2

I live in Arizona and some of the leaves on my rose bush and rose trees have leaves that turn yellow and brown. These are roses that have been in the ground for several years.