It’s hard to resist a Gardenia – even if it has a well-deserved reputation for being
difficult - with its elegant collection of leaves combined with beautiful blooms that
exude a heavenly coconut-vanilla scent. But although they can be very challenging, it
is not impossible to successfully grow them indoors, provided that their needs, which
really a just a few and uncomplicated, are met - precisely.
Provide bright light but avoid direct midday sun in the summer. Humidity is absolutely
essential; place the plant on a pebble tray or add a humidifier nearby. Use a porous,
well-draining, slightly acidic soil; keep it evenly moist but never soggy. Feed your
gardenia about once a month with an acidic fertilizer between April and November. Ideal
temperature range is between 15°C (60°F) to 18°C (65°F) during the night and about 10
degrees higher during the day. If possible, move your Gardenia outdoors in the summer in
an east or west position in partial shade.
If your plant is not blooming, or if it’s dropping flower buds prematurely, some of the
most common reasons include: low humidity, insufficient light, cold drafts, changing the
plant’s location (especially while in bud), temperature fluctuations, over or under watering,
pest infestations and high temperatures (Gardenias fare poorly in very warm rooms; keep them cool).
I have not personally grown a Gardenia in hydroculture but visitors to my website and a company
that supplies hydroculture products have recommended the union. As an experienced grower who
has converted, and successfully grown, a wide variety of plants in this system, I have no
reason to doubt it.
Learn more: Gardenias Don’t Live Here Anymore