my Gardenia in a large pot has been outside and starting getting brown in the centre of the leaves which then fell off. The leaf is green edged with yellowish centre - I then brought it into the conservatory but the same thing is happening - the white flowers are perfect - please any advice? thank you.
Certified GKH Gardening Expert
Lack of humidity is most likely a key issue. Gardenia are very finicky plants.
Here is a few articles that will help you.