Begonia amphioxus is one of the most striking and unusual Begonia species, renowned for its elegant lance-shaped leaves patterned with bold red markings. Native to the limestone forests of Sabah, Borneo, and part of the Begoniaceae family, this rare species is adored by collectors for its delicate form and dramatic, contrasting colours.

The leaves are slender, elongated, and slightly translucent, with a soft green to pale lime background. Along the leaf blade, deep crimson to wine-red blotches are scattered like brushstrokes, creating a vivid, painterly effect. The leaf margins are rimmed in a fine red edge, intensifying the species’ jewel-like appearance. Stems are thin, upright, and similarly flushed with red, giving the plant a graceful, airy structure.

Lightweight, elegant, and unmistakably exotic, Begonia amphioxus brings a striking splash of colour and movement to terrariums, plant cabinets, and curated Begonia collections.

Begonia amphioxus – Care Guide

Light

Prefers bright, indirect light to maintain vibrant red markings and healthy growth. Too much direct sun can scorch the delicate leaves, while overly low light may cause the red patterns to fade.

Watering

Keep the soil lightly moist, allowing the top 1–2 cm to dry between waterings. Avoid both full dryness and waterlogging. Use soft, filtered, or rainwater to prevent mineral buildup, as the leaves are sensitive.

Temperature and Humidity

• Temperature: Thrives at 20–26 °C. Avoid cold draughts and temperatures below 16 °C.

• Humidity: Requires high humidity (70–90%) to prevent crisping, wilting, or edge damage. Ideal for terrariums, vivariums, and greenhouse cabinets.

Soil and Potting

Use a very light, airy, moisture-retentive mix — such as a combination of fine orchid bark, peat-free compost, perlite, and sphagnum moss. Avoid heavy soils. Repot carefully every 1–2 years due to its delicate stems and root system.

Feeding

Feed every 4–6 weeks during spring and summer with a weak, balanced fertiliser. Avoid strong feeds, which can damage sensitive roots.

Pruning and Maintenance

Remove old or damaged leaves at the base. Pinch back lightly to encourage branching, though the species typically maintains an upright, airy form. Avoid overhead watering to protect the fine leaf surface.

Growth and Maturity

A small, moderately slow grower that typically reaches 15–25 cm in height. With maturity, it forms a graceful cluster of stems, each topped with its iconic spotted leaves. Suitable for miniature landscapes and close-up display.

Common Issues

• Crispy leaf tips: Low humidity or inconsistent watering.

• Faded red markings: Insufficient light.

• Leaf collapse: Cold temperatures or overwatering.

• Pests: Watch for fungus gnats in moist soil and occasional spider mites.

Background and Benefits

Begonia amphioxus is highly prized in the world of rare Begonias for its slender form and dramatic leaf patterning. Its unique spotted markings and translucent foliage make it a standout species for terrarium designers and collectors alike.

Its compact size and vivid colours bring life and movement to small plant displays. When grown in ideal humidity, it becomes a mesmerising miniature focal point — almost botanical artwork in living form.

Quick Care Summary

Light: Bright, indirect
Water: Keep lightly moist; let top 1–2 cm dry
Temperature: 20–26 °C
Humidity: Very high (70–90%)
Soil: Light, airy, moisture-retentive
Feed: Every 4–6 weeks in growing season
Growth: 15–25 cm; slender, spotted leaves
Toxicity: Mildly toxic if ingested; keep away from pets and children

Styling Tip

Display Begonia amphioxus in a terrarium or glass cabinet with soft lighting that highlights its translucent leaves and crimson “brushstrokes.” Pair with mosses, miniature ferns, and other delicate understory plants to create a vibrant, artistic rainforest vignette.