Q.Gardenia
I have a Gardenia plant about 4 years old. It is in good health. However, when it starts having flowering buds, they turn black and never bloom into complete flowers. It gets water every other day by automatic sprinkler system.

Heather
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on June 3, 2015
This article should help:
https://www.gardeningknowhow.com/ornamental/flowers/gardenia/gardenia-flowers-gardenia-buds-falling-off-plant.htm
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