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Small tree, usually only to 10-20ft. tree with large, glossy green leaves. The white flowers have a gardenia-like perfume. Enjoys moist, warm environment of Rainforest. Dark shining foliage sets off these beautifully fragrant spring flowers. They are star-shaped and come in clusters. In late autumn, yellow skinned fruits develop, 2"-4" in diameter, filled with small seeds embedded in soft pulp, with a flavor resembling a mangosteen. Dense, shiny foliage, the leaves are large, dark green and glossy. Very tropical looking plant, rare in cultivation.
Flowers of this tropical shrub are long tubes opening as a white fragrant trumpet, hence the common name. Gorgeous sight! Light green dense foliage resembling coffee leaves is also very ornamental. This is a very rare species. Can be grown in a pot as a houseplant, requires bright light for blooming.
Gardenia brighamii is endemic to the Hawaiian Islands and at one time thought to have occurred on all of the main islands. Judging from its use by the Hawaiians as a cloth dye, its habitat, associated species, and distribution in the early 1900s, it was probably a relatively common member of the lowland dry forest. At the beginning of the 20th century, it was considered common on west Moloka`i and Maui, but already either extirpated or very rare on the other islands. Today, the total known wild individuals of Gardenia brighamii numbers less than 20 and are distributed among 6 populations on Oah`u, Lana`i and Moloka`i. Gardenia brighamii, the Hawaiian gardenia, somewhat resembles the commonly cultivated Tahitian gardenia (Gardenia taitensis). Gardenia brighamii is a small tree, which may grow up to 20 feet in height. The leaves are oval-shaped, shiny and dark green. The solitary flowers are white and very fragrant. Read more about gardenias.
Large rounded shrub or small tree, can be maintained at any height below 10 ft. Large single flower is golden yellow and very fragrant. Blooms from spring to fall. Cold hardy to low 30s.
Slow-growing shrub or multi-branched small tree, a bit succulent-looking due to its growth habit ans tiny leaves. It will grow eventually 7 to 10 ft tall, with erect and spreading main branches, branchlets sometimes with thick thorns, a trunk that is whitish grey, the bark is smooth, often flaking into thin peels. Spectacular, large white and yellow flowers with their sweet scent attract passersby from a distance to this small, much-branched tree. Leaves are smooth and crowded at the ends of twigs, usually in whorls of three, light glossy green, short-stalked, 1-2" size, oval to almost round. Flowers are solitary at the ends of short, rigid branches, borne November to March, white turning yellow, short-stalked, with a long, slender greenish tube, and spreading white lobes. The calyx is very unusual, with long, narrow lobes arising from its sides and not at its apex. The flowers are followed by smooth, glossy, golden yellow fruits. They are attractive, pear-shaped, woody, glossy golden yellow, hard and flattened, usually produced in large quantities between February and August. The long, slender flower tube and the white, sweetly scented flowers suggest that insects like moths and butterflies pollinate this plant. Decorative fruiting branches placed in a vase may remain fresh for up to month, since branches are able to absorb water readily. In traditional medicine, fruit and roots are boiled and used as an emetic. This very neat and decorative small tree is best suited for a spot in the garden where it will stand alone so that it gets all the attention it deserves, more especially when in flower. The genus name Gardenia was named after Alexander Garden, a medical doctor and naturalist from South Carolina. The species name cornuta means horned; perhaps referring to the remnants of the persistent calyx lobes of the fruit. This species was first collected in 1870 but it was only after 35 years that it was eventually described in 1906. The genus Gardenia has about 60 species in tropical and warm parts of the Old World, seven in southern Africa. Gardenia cornuta is not widely found in gardens. Another related species, Gardenia thunbergia, looks much alike due to similar growth habit and small leaves (which are pointed unlike rounded leaves of g. cornuta) and is another attractive species, worthy of cultivation. Because of its growth habit and slow growth rate gardenia cornuta is a good bonsai plant. Very closely related specie - Hyperacanthus amoenus (Gardenia amoena).
The pale yellow, ellipsoid fruit can be 3 - 5cm long.
Everblooming Gardenia. It is well known there is little to rival the fragrance of Gardenias, and this plant is no exception. It lends itself well to pot culture with a compact stature. As new growth emerges, buds appear and then unfold into pristine white flowers that have a loose, double form. The long narrow leaves and upright spreading habit make this a distinctive addition to any collection. Hardy Zone 8 and higher Full or partial sun, grows to 1-3 ft in container, intermittent bloomer. Read more about gardenias.
Very rare Thai endemic plant. It has yellow/golden fragrant flowers similar to Gardenia tubifera Kula except that it has erect flower (never pendulus), less number of petals and leaves are slightly velvetish.
This gardenia is better suited for alkaline soils (S. Florida) than G. tubifera kula
Gorgeous, dark to bright green, opposite leaves on a shrub that can grow up to 6' with almost equal spread. Leaves are glossy and leathery. Mature shrubs usually look round, and have a medium texture. Blooms in mid-spring to early summer, over a fairly long season. Flowers are white, turning to creamy yellow as they age, and have a waxy feel. They have a powerful, sweet fragrance, and can perfume an entire room. Air currents waft the scent throughout the warm summer garden. Gardenias prefer acid, moist, well-drained soils. Use fertilizer for acid loving plants, and use iron compounds. Add plenty of organic matter, such as compost or ground bark, to as large an area as possible. Mulch plants instead of cultivating. A good time to feed gardenias is mid-March, using an acid plant food, fish emulsion or blood meal. Feed the shrubs again in late June to encourage extra flowers on everbloomers or faster growth of young shrubs. Do not fertilize gardenias in the fall. Doing so will stimulate tender growth, which may be killed if the temperature in winter drops below 15 degrees.
This plant is often seen labeled as Gardenia jasminoides which is now a synonym and no longer valid.