Begonia amphioxus

Begonia amphioxus is one of the most visually distinctive species in the Begonia genus. It is characterized by:

• Narrow, lance-shaped leaves

• Bright red spots scattered across the leaf surface

• Red or pink leaf margins

• A thin, semi-translucent leaf texture

The plant grows in a somewhat upright but delicate, bushy form and typically reaches 20–40 cm in height. It is considered a sensitive but highly decorative collector’s plant.

History and Origin

• Discovered in the 1980s

• Described scientifically by botanist Ruth Kiew in 1996

• Native to limestone forests in Sabah, Borneo

• Grows naturally in warm, humid, shaded environments, often in limestone crevices

Its natural habitat explains why it prefers good airflow, high humidity, and dislikes waterlogged soil.

Care Tips

Light

• Prefers bright, indirect light

• Too little light leads to pale leaves and weak growth

• Too much direct sun causes leaf burn and loss of color intensity

Watering

• Maintain lightly moist soil without keeping it soaked

• Allow the top layer of soil to dry slightly between waterings

• Soft, filtered or rainwater is recommended

Humidity

• Ideal humidity is 70–90 percent

• Thrives in terrariums, display cases or controlled environments

• Low humidity causes crispy edges and slowed growth

Temperature

• Ideal temperature range: 20–28°C (68–82°F)

• Avoid temperatures below 17°C (62°F)

Soil

• Use a very airy, fast-draining substrate

• A suitable mix can include: coco or peat, perlite, bark, and a small amount of crushed limestone

• Avoid dense soils that retain too much moisture

Fertilization

• Feed lightly every 2–3 weeks during the growing season

• Use a diluted, balanced fertilizer

Additional Notes

• Sensitive to overwatering and sudden environmental shifts

• Performs best with stable humidity and temperature

• Propagation from stem cuttings is possible but requires high humidity to root well