gardenia bloom

Question

how often do gardenias bloom in zone 8?

Answer 1

So much actually goes into this question!

It depends on the variety, the growing conditions, pruning and the temperatures; both when the buds set and when the plant begins to flower.

Bloom time can be anywhere from May through fall.

https://www.gardeningknowhow.com/ornamental/flowers/gardenia/gardenia-care-to-get-a-gardenia-bush-to-bloom.htm