Gardenia Bud Drop: Too Wet, Too Dark, Too Cool—Fix the Trio

Your new gardenia opened one flower, then buds blacken and fall. Classic bud drop causes:

The Tropical Triangle Gardenias Demand

• Full sun (south window, or outdoors in summer).
• Sandy, fast-draining soil (not peat-heavy nursery mix).
• Warm temps (65–75°F day, not below 60°F night).

Immediate Fixes

1. Move to sunniest spot.
2. Let soil dry more between waterings. Peat holds too much water.
3. Eliminate drafts (cold air = bud drop).
4. Do not repot or fertilize now.

Long-Term

Repot next spring into cactus/succulent mix + perlite. Gardenias are hard indoors—they thrive in Florida sun/sand/heat. If you can't replicate that, enjoy it while it lasts and replace with an easier bloomer (African violet, streptocarpus).