Gardenia Flower Zone. Can be planted in a container from fall to spring. Cold hardy gardenias are available in commerce but that doesnt guarantee zone 5 gardenia shrubs.
Feb 19 2016 These plants are native to tropical areas with very high humidity so having the proper humidity levels in a home setting is essential. These plants have not been bred to survive severe cold. Can be planted in a container from fall to spring.
So You Want a Gardenia in Zone 6a.
The soil should drain fast but retain water as well. Perennial gardenia grows in USDA plant zones 7 to 11. Indoor gardenias require cool temperatures moderate humidity and plenty of bright light to thrive. Condition it with plenty of organic matter such as peat moss or ground bark.