Selaginella uncinata is a creeping plant native to subtropical regions. It thrives in warm, shady, and humid environments. This makes it an excellent choice for terrariums, particularly tropical or enclosed setups where humidity levels remain high.

Selaginella uncinata, also known as blue-green Selaginella or 'peacock fern', is a striking spike-moss with a unique, iridescent blue-green color. In the right light, the foliage displays a metallic sheen reminiscent of peacock feathers—hence the nickname. Selaginella uncinata is a creeping plant native to subtropical regions. It thrives in warm, shady, and humid environments. This makes it an excellent choice for terrariums, particularly tropical or enclosed setups where humidity levels remain high. Selaginella uncinata is easy to care for, provided you respect its preferences: Light – Prefers partial shade to full shade. Avoid direct sunlight, as it can scorch the leaves. It also grows well under artificial light, making it ideal for terrariums or vivariums. Water & Humidity – The soil should remain moist but not waterlogged. Use soft or demineralized water to prevent limescale buildup. High humidity (70–90%) is crucial; the plant will quickly die back in dry air. A terrarium or glass cloche is therefore the best environment. Temperature – Ideal range: 18–24°C. It does not tolerate cold or drafts; avoid temperatures below 10°C. Soil – Airy, moisture-retentive soil. A mix of peat, sphagnum moss, and perlite or coconut fiber works well. Heavy fertilization is not required; a light application of plant food once a month during the growing season is sufficient. The symbols below provide a quick overview of care requirements.