28
Apr
2009
Gardenia jasminoides - Gardenia
House Plant | Trees and shrubs | Magnoliopsida
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Scientific name - Gardenia jasminoides

Genus was named by Carl Linnaeus after Dr. Alexander Garden naturalist from North America.

Gardenia jasminoides was introduced in Europe in 1761 in China, Taiwan, Vietnam and Japan.

Synonyms --

Popular names - Cape jasmine, common gardenia, gardenia, Huang-chi-tzu, Pinyin, Wade-Giles, Zhi-day.

Distribution and Habitat - originating in tropical regions of South Africa, China and Japan, comprises about 250 species of which the most widespread is Gardenia jasminoides.

Description - shrub or small tree, growing 1-15 m tall. Leaves glossy, evergreen, opposite, coriacee, oval or elliptical, dark green, 7-10 cmlength. Large solitary flowers, double or semiduble, white, 5.12 cm diameter. Bloom from May to September.

Requirements - grows well in bright environments but not direct sun, moist. Insufficient ambient humidity cause hair bud. Earth leaves acid totally limestone, pH 4.5-5.5. Spring-summer blooming varieties require a dormant period in winter, at a temperature of 12-18 ˚ C and with reduced watering (7-10 days). To thrive in winter temperatures should not fall below 16-18 ˚ C.

Management - cutting the crown correction is made after the fall or spring flowers. It fertilizeaza twice a month with a liquid fertilizer for plants acidofile, during the flowering season. No tap water should be used only natural mineral water status or demineralized water, unless the leaves turn yellow, green only remaining ribs. Adapters may be spring, whenroots have filled the dish. It uses a container with a greater degree than previously.

Propagation - by seedlings top, 8 cm long, spring. Ties takes place after 4-6 weeks at a temperature of 20-24 ˚ C. The seeds spring to 19-24 ˚ C.

Diseases and pests - Botrytis (fungus that appears on the roots and shoots in the species cultivated in the greenhouse), Cephaleuros virscens, Diaporthe gardeniae (yellowing leaves), Mycosphaerella gardeniae, Pestalotia langloisii, Pellicularia (appearance of spots on the leaves and stalks, causing death leaves; spots of 0.7-10 mm in diameter, circular), Phomopsis gardeniae, Phyllosticta, nematodes, mites.

Pellicularia can be controlled by breaking and destroying leaves contested and not be affected leaves wetted with water at all.

Controlling Botrytis is by breaking and destroying buds attacked.

Limestone soil leads to the appearance of excessive green-sickness. Controllinggreen-sickness is made by adding the iron fertilizers pa soaked in water.

If the buds turn yellow and fall, just before opening, because of an atmosphere is too dry and light Enough. Gardenia in Winter locate a cool, well-lit room and enlarged the humidity around the plant.

Loss of leaves can cause asphyxiation roots with too much water.

Meloidogyne incognita attack plants grown in greenhouse or apartment. Plants do not grow normally affected leaves become mottled.

Natural partners and Garden - Dianthus, Narcissus pseudonarcissus.

Cultivars and varieties - 'August Beauty' white flowers, 'Florida' 1 m high, flowers white, 'Grandiflora' flowerswhite 'Radicans', 'Veitchii' double flowers, white.

Properties and Uses - fruits are prescribed for high fever, insomnia and vomit blood. External is used to bumps and bruises. 6.12 g of dried fruit, tea.

In traditional Chinese medicine is forbidden fruit of patients with spleen problems or diarrhea.

 

References

Constance Rogers, David J. Rogers - Woody Ornamentals for Deep South Gardens - University Press of Florida, 1991

Ellen Zachos - Tempting Tropicals - Timber Press, 2005

Herit Ms. Jacqueline - Complete Trees, Shrubs & Hedges - Creative Homeowner, 2005

Pascal P. Piron - Diseases and pests of ornamental plants - Wiley, 1978

Peter Loewer - The Evening Garden - Timber Press, 2002

Steven Foster, Yue Chongxi - Herbal Emissaries - Healing Arts Press, 1992

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