Q.Gardenia: tiny bugs in every bloom.
Every single bloom on my gardenia shrubs have very tiny black bugs just racing all the time. They seem to go to the base of the bloom when you cut them. This makes them have to stay on the shrub sometimes and I love to cut and bring them indoors for their fragrance.
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/brown-spots-gardenia-buds.htm