Bryobium retusum — a hard houseplant, prefers full shade light
SPECIMEN · FROM THE LIBRARY
Bryobium retusum

Bryobium Retusum

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ON THIS PLANT

Bryobium retusum, commonly known as Christmas Island urchin orchid, is an epiphytic clump-forming orchid that has oval, fleshy green pseudobulbs, each with two leaves and between seven and twelve short-lived, self-pollinating, pale green, hairy flowers. This orchid is found between Java and New Caledonia.

A note from PlantMom

Christmas island urchin orchid typically has strong resistance to disease and encounters relatively few insect pests. Its care is considered difficult, since it needs high humidity yet good ventilation and an environment with few harmful pathogens. Overwatering can cause root rot. While growing Christmas island urchin orchid is suitable for everyone, keeping it healthy and inducing it to flower again requires more cultivation experience.

— PlantMom
CARE GUIDE

How to keep Bryobium Retusum.

Light

The urchin orchid from Christmas Island thrives in places that have a significant amount of shade but it can still prosper in partial sunlight or when the sun's rays are scattered. This orchid's birthplace is associated with habitats where direct sunlight is few and far between. Overexposure to sunlight can potentially damage it, while inadequate light can hinder its growth.

Water

The Christmas Island urchin orchid, which originates from tropical rainforests, flourishes in high humidity and requires consistent moisture. It should be watered twice a week, although it can tolerate brief periods of dryness. As an epiphytic orchid, it benefits from increased ambient humidity, especially during periods of active growth. You can achieve this by misting the plant or using pebble trays to ensure its optimal health.

Temperature

For the Christmas Island urchin orchid to flourish, it should be grown in its indigenous environment where temperatures fluctuate between 68 and 100 degrees Fahrenheit (20 to 38 degrees Celsius). If you are planning to grow this plant, ensure that these temperatures are sustained throughout the year to promote ideal growth.

Fertilizer

For the wellbeing and optimal appearance of the Christmas island urchin orchid, it is vital to fertilize it properly. During the summer, the Christmas island urchin orchid should be given fertilizer on a monthly basis. The nutrients provided by the fertilizer stimulate growth and help sustain the components of the plant. Furthermore, fertilization magnifies the flower displays of Christmas island urchin orchid, guaranteeing the most splendid blossoms.

Pruning

The Christmas Island urchin orchid is known for its distinctive round-shaped flowers. To keep it healthy and enhance its appearance, it's important to prune it properly, ideally from late winter to early spring. Focus on removing dead stems and thinning out any overcrowded areas to improve airflow. Be careful not to over-prune, as this can reduce the number of blooms. Regular pruning promotes healthier growth and improves the plant's overall aesthetic appeal.

Pot & Repot

During the repotting process of the Christmas island urchin orchid, opt for a somewhat bigger pot with excellent drainage, ideally a transparent orchid pot. Select a potting mix specific to orchids that drains well and includes either bark or moss. Carefully cleanse the roots and trim any that appear deceased or decomposed. Conduct the repotting process following bloom, typically in the spring or autumn, water it extensively, and position it in bright yet diffused light. Make sure not to meddle with the roots after it has been repotted.

CHARACTERISTICS

Botanical profile.

Plant Type
Herb
Life Cycle
Perennial
Genus
Bryobium
Family
Orchidaceae
Hardiness Zone
9-11
Mature Height
2 cm to 2 cm
Mature Spread
1 cm to 1 cm
Leaf Color
Dark Green
Leaf Type
Evergreen
Flower Color
White
Flower Size
1.02 cm to 2.03 cm
Bloom Time
All year round
Planting Time
Spring, Summer, Autumn
Harvest Time
All year round
Native Area
Indonesia
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