Microsorum siamense

Microsorum siamense is a stunning lithophytic/epiphytic species native to southern Thailand. Its glossy, metallic-blue fronds unveil a special iridescence under ideal conditions.

Features and Habitat:

• Habitat: Grows naturally on limestone cliffs or trees in karst regions of southern Thailand at elevations from about 250–700 m.
• Leaves: Glossy, pointed fronds exhibit a striking metallic blue sheen, particularly under low-to-medium indirect light.
• Growth Habit: Slow-growing, tight clumping plant that spreads via wiry rhizomes.

Care Tips:

• Light: Thrives in medium to low indirect light. Bright shade enhances blue tones; too much light can turn fronds green.
• Watering: Keep substrate moist; water weekly while avoiding both waterlogging and extended dryness.
• Humidity: Prefers high humidity (60–80%). Ideal for terrariums, paludariums, or humid indoor spaces.
• Temperature: Warm to intermediate climate: between 20–30 °C daytime and above 15 °C at night.
• Substrate: Use well-draining mix with humus; adding limestone chippings echoes its natural cliff habitat and enriches iridescence.
• Airflow: Ensure gentle air movement to prevent fungal issues.