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Interesting Facts

Gardenias are highly desired because of their fragrant flowers, but these flowers can cause allergic reactions, headaches, and asthma in sensitive people.

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Everblooming Gardenia   (Gardenia augusta)

Cape Jasmine

Gardenia 'Veitchii' is the oldest cultivar of Gardenia and yet it is still the most reliable bloomer of all the Gardenias.  This glossy dark green leafed evergreen gets to about 4' high and 6' wide when mature and will bloom prolifically from late spring to the fall frosts.  Blooms are double and resemble roses with an enchanting aroma. Great as an informal hedge or for against the house planting.  If it is given some afternoon shade in its location, you will see it flourish!

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Plant Types: Interior Plant, Perennial, Shrub
Light: Partial Shade to Full Sun
Height: 4 feet to 8 feet
Width: 5 feet to 8 feet
Zones: 8a to 15b
Bloom Color: White
Bloom Seasons: Late spring, Early summer, Mid summer, Late summer, Early fall, Mid fall, Late fall
Leaf Color: Green
Special Features: Attractive foliage, Not North American native
Shape: Rounded
Fertilizer: Miracle-Gro® Nursery Select Miracid® Water Soluble Plant Food
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Plant Care

In cooler climates, grow in containers that can be overwintered indoors or in greenhouses. If growing in a container, line the bottom of the pot with peat moss, and place pebbles in the plant tray under the pot. Add mulch at the base of the plant once potted.

Plant Growth:

Gardenias do best with full sun or partial shade, but can tolerate shadier locations especially in warmer climates. In desert climates, give Gardenias northern or eastern exposure. Hardy to 20°F/-7°C in the colder times of year, but truly thrive with hot summers. Be cautious about misting the leaves, as they are susceptible to fungus. Many people consider Gardenias difficult to grow, but worth the effort. If you are having trouble, a local nursery may be able to help with problems that Gardenias suffer in your area.


Gardenia flowers are known to have very fragrant, white flowers. Different cultivars and species of Gardenias flower at different times of year.

Gardenias flower best when night temperatures are around 60°F (16°C).

Gardenias are very temperamental plants, especially when it comes to premature bud drop. Gardenias have a tendency to drop their buds before the flowers open if conditions are not just right.  Low humidity, low light, under- or overwatering, temperature fluctuations, cold drafts and even simply moving a potted plant (this causes physical stress to the plant) can cause the buds to drop early.

Soil and Irrigation:

Gardenias need fast-draining soils that have some capacity to retain water. To do this, provide organic soils amended with sand, perlite or pumice stone. Water moderately, but don't allow to dry out. Wintering your Gardenia indoors is especially tricky.  Put in the sunniest place possible with high humidity. Soil should remain evenly moist, but if it is waterlogged, it can lead to serious root damage.


Feed every 3 to 4 weeks during the growing season. Use acidic fertilizer, blood meal or fish emulsion. Magnesium deficiency can be a problem resulting in yellow leaves that have green veins (very similar to iron deficiency). Put 1 tablespoon of Epsom salts into 1 gallon of water and feed with a deep irrigation.


Prune for shape, if desired, after flowering.


Aphids and scale can be a problem. Frequently spray foliage with jets of water to remove insects. You can apply light horticultural oil to assist in pest control, but do not apply during the day if the temperature is above 90°F/32°C. You can apply the horticultural oil at night, but be sure to spray it off in the morning.