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garden croton (Codiaeum variegatum)

Codiaeum variegatum is a perennial evergreen woody shrub that can take a small-tree form and is often grown indoors as a large foliage plant.

LightIt grows in bright light to full sun and can also accept partial sun, while shade tolerance varies among cultivars. Insufficient light may fade leaf color, while stronger light helps maintain vivid coloration.
WaterFrom spring through autumn, regular and relatively ample watering keeps the growing medium moist but well drained, while watering is reduced in winter. Some horticultural sources also recommend watering after the surface
HumidityIt is generally reported to prefer moderate humidity.
TemperatureSources differ, with the limited available information indicating a minimum temperature of about 15 °C. Hardiness-zone accounts differ, and it is generally reported to tolerate brief light frost.
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garden croton illustration

Overview

Codiaeum variegatum is a perennial evergreen woody shrub that can take a small-tree form and is often grown indoors as a large foliage plant.

Origin and habitat

Sources differ on its native range, describing it mainly across the Malaysian archipelago, the Philippines, Indonesia, and New Guinea, extending to Queensland in Australia and western Pacific islands including Fiji and Vanuatu. It is reported to occur beneath well-developed lowland and montane rainforest and to be more common in drier rainforest environments and on soils formed from recent basalt. It is associated with tropical to warm conditions and high temperatures and is widely cultivated as an ornamental plant in tropical and subtropical regions.

Characteristics

Sources differ on mature height, with the few available accounts indicating about 100–300 cm. The leaves are thick, leathery, and glossy, with highly variable forms including elliptic, ovate, lanceolate, linear, fiddle-shaped, wavy, and spirally twisted forms; cultivars are known for variegation in green, yellow, red, purple, orange, and pink. It is reported to be monoecious with separate male and female flowers on slender racemes; male flowers are white with small petals and multiple stamens, while female flowers are yellowish to yellowish white. Flowering is reported to occur mainly in early autumn, although timing varies by region; the fruit is reported to be a nearly spherical capsule containing seeds.

Light

It grows in bright light to full sun and can also accept partial sun, while shade tolerance varies among cultivars. Insufficient light may fade leaf color, while stronger light helps maintain vivid coloration.

Watering

From spring through autumn, regular and relatively ample watering keeps the growing medium moist but well drained, while watering is reduced in winter. Some horticultural sources also recommend watering after the surface of the growing medium has dried.

Humidity and airflow

It is generally reported to prefer moderate humidity.

Temperature and dormancy

Sources differ, with the limited available information indicating a minimum temperature of about 15 °C. Hardiness-zone accounts differ, and it is generally reported to tolerate brief light frost.

Growing medium and mounting

It grows in well-drained, humus-rich soil kept moderately moist and can tolerate occasional drying.

Feeding

It is reported that feeding can be more frequent during spring and summer growth, while one source advises against an excessively fertile growing medium.

Propagation

It is reported to be propagated in spring by cuttings or air layering and can also be propagated from seed.

Common problems

Reported pests include two-spotted spider mites and greenhouse thrips. Insufficient light can fade leaf color, while overly dry conditions, low temperatures, or unsuitable growing conditions may cause yellowing, wilting, or leaf drop. It is sensitive to low temperatures, and cold can cause leaf drop; mature plants may briefly tolerate light frost, while indoor-growing information recommends a substantially higher minimum temperature.

Identification

Its most conspicuous features are thick, glossy, highly variable variegated leaves, with cultivars showing diverse leaf shapes and strong combinations of green, yellow, red, and purple; some leaves may be spirally twisted.

Photos

Codiaeum variegatum
📷 Louise Wolff --darina 23:22, 6 May 2005 (UTC) · CC BY-SA 3.0 · source
Codiaeum variegatum
📷 Jayesh Patil, some rights reserved (CC BY) · CC BY · source

Sources