24+ Gardenia Buds Turning Brown Falling Off. If your gardenia's flower buds fall off just before they open, this may be caused by any of these reasons. If the buds on a new gardenia plant turn to black and drop off the issue could be all environmental.
Why are those leaf tips turning brown?
If the buds on a new gardenia plant turn to black and drop off the issue could be all environmental. Why are the flowers on my gardenia plant turning brown? Looks like it is growing nicely; Fertilize your shrubs with an acidic fertilizer once a month from april through november.