I am new to gardening and this plant was a gift. Once the flower dies, should I just remove the dead petals, or how far down the stem should I go?
Certified GKH Gardening Expert
Deadheading removes the unsightly faded blooms, but letting them fall on their own will not hurt the plant.
Here is an article or two that you may find helpful: https://www.gardeningknowhow.com/ornamental/flowers/gardenia/gardenia-plant.htm