Gardenia jasminoides
Common Gardenia
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Common Gardenia (Gardenia jasminoides) - Description
Gardenia jasminoides, (common gardenia, cape jasmine or cape jessamine) is an evergreen flowering plant of the family Rubiaceae. It originated in Asia and is most commonly found growing wild in Vietnam, Southern China, Taiwan, Japan, Myanmar and India. With its shiny green leaves and heavily fragrant white summer flowers, it is widely used in gardens in warm temperate and subtropical climates, and as a houseplant in temperate regions.
Common Gardenia (Gardenia jasminoides) - Blooming
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.
Common Gardenia (Gardenia jasminoides) - 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.
Common Gardenia (Gardenia jasminoides) - Planting
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.
Common Gardenia (Gardenia jasminoides) - Pest
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.
Common Gardenia (Gardenia jasminoides) - Interesting facts
Gardenias are highly desired because of their fragrant flowers, but these flowers can cause allergic reactions, headaches, and asthma in sensitive people.
Common Gardenia (Gardenia jasminoides) - 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.
