Citrus x sinensis

USDA Plant Hardiness Zone Map

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Orange refers to a citrus tree (Citrus sinensis) and the fruits of this tree. It is a hybrid of ancient cultivated origin, possibly between Pomelo (Citrus grandis) and Tangerine (Citrus reticulata). It is a small tree, growing to about 30ft tall, with thorny shoots and evergreen leaves 2-4in long. The fruit originated in southeast Asia, in either India, Vietnam or southern China.

Oranges are widely grown in warm climates worldwide, and the flavors of orange vary from sweet to sour. The fruit is commonly peeled and eaten fresh, or squeezed for its juice. It has a thick bitter rind that is usually discarded, but can be processed into animal feed by removing water using pressure and heat. It is also used in certain recipes as flavoring or a garnish.

Cleistocactus sp.

Cleistocactus is a genus of flowering plants in the cactus family Cactaceae, native to mountainous areas - to 3,000 m (9,843 ft) - of Peru, Uruguay, Bolivia and Argentina.

Clerodendrum heterophyllum, Clerodendrum aculeatum

Medium size shrub with white star-like flowers, slightly fragrant. Stems are spiny. Can be trimmed into a nice bushy specimen. This plant can be used for bonsai culture. Requires regular watering.

Cnidoscolus tehuacanensis

Codon royenii

The species of the genus Codon are annual to perennial herbs.

Codon royenii is not grown horticulturally. The attractive flowers of this species present a challenge to the keen gardener!