Q.Gardenia Pests
My gardenia plant is a hand-me-down from my mom. I have had it about two months. About a week ago, it began to show signs of bug infestation, so I misted it with a cedar oil solution. The bugs began to halt their siege on my plant, and my poor gardenia started dropping its leaves. Then it just keeled over; two-thirds of my gardenia is drooping. It is about one-third the fullness of its former self just a week ago. About a third of the leaves left on the plant are going to fall off: they are pale yellow and brown. The soil is moist, so it does not need water. What happened to my beautiful gardenia plant? How can I save it? What are good natural pesticides for a gardenia? I have a pet, and she and I are sensitive to chemicals. What all-natural treatments do you recommend?

These articles will help you.
https://www.gardeningknowhow.com/ornamental/flowers/gardenia/gardenia-pests.htm
https://www.gardeningknowhow.com/ornamental/flowers/gardenia/common-gardenia-diseases.htm
https://www.gardeningknowhow.com/ornamental/flowers/gardenia/growing-gardenias-indoors.htm