Selaginella erythropus red ruby

Selaginella erythropus 'Red Ruby' – Rare Ruby Red Spikemoss for Terrariums and Vivariums

Selaginella erythropus 'Red Ruby' is a rare and highly ornamental tropical plant prized for its stunning two-tone foliage. Commonly known as Ruby Red Spikemoss or Ruby Red Club Moss, this unique species displays lush green foliage on the upper surface while revealing brilliant ruby-red to burgundy undersides and vibrant red stems. The striking color contrast makes it one of the most attractive Selaginella species available for terrariums, vivariums, paludariums, and tropical plant collections.

Although often mistaken for a fern or moss, Selaginella erythropus belongs to an ancient lineage of vascular plants that predates many modern plant groups. Its compact growth habit, vibrant coloration, and love for humid environments make it a favorite among terrarium hobbyists and rare plant collectors.

Appearance and Growth Habit

Selaginella erythropus 'Red Ruby' forms dense mats of finely textured foliage that spread horizontally across the substrate. The plant maintains a low-growing, creeping habit and develops a lush carpet of colorful leaves under ideal conditions.

The most remarkable feature is the vivid ruby-red coloration found on the underside of each leaf. Combined with bright red stems and emerald-green upper foliage, the plant creates a striking display from every angle.

Key Features

Vibrant ruby-red leaf undersides

Bright red stems and branching growth

Dense creeping and carpeting habit

Excellent terrarium foreground plant

Rare and highly collectible species

Unique prehistoric plant lineage

Care Requirements

Light

Red Ruby Spikemoss prefers bright, indirect light.

Medium to bright filtered light is ideal

Avoid direct sunlight

Proper lighting enhances red coloration

Low light may reduce color intensity

Watering

Consistent moisture is essential for healthy growth.

Keep substrate evenly moist at all times

Never allow the plant to dry out completely

Avoid waterlogged conditions

Soft or purified water is preferred

Humidity

High humidity is critical for success.

Ideal humidity range: 70–90%

Thrives in closed terrariums

Perfect for vivariums and paludariums

Benefits from stable tropical conditions

Temperature

The ideal temperature range is 20°C to 28°C.

Warm, stable temperatures encourage vigorous growth and vibrant foliage coloration.

Substrate Requirements

Selaginella erythropus grows best in a moisture-retentive yet airy substrate.

Recommended Mix

Coco peat or peat moss

Long-fiber sphagnum moss

Fine orchid bark

Perlite or pumice

Leaf litter for natural nutrients

The substrate should retain moisture while allowing adequate airflow around the roots.

Terrarium and Vivarium Applications

Red Ruby Spikemoss is one of the most versatile carpeting plants for tropical enclosures.

Ideal Uses

Foreground terrarium plant

Tropical vivarium ground cover

Paludarium accent plant

Moss alternative

Rainforest-themed displays

High-humidity plant collections

Its vibrant red undersides create a dramatic color contrast rarely seen in other terrarium plants.

Why Choose Selaginella erythropus 'Red Ruby'?

Rare ruby-red foliage coloration

Excellent terrarium carpeting plant

Thrives in high humidity environments

Compact and easy to maintain

Ideal for vivariums and paludariums

Unique prehistoric plant with exceptional ornamental value

For hobbyists looking to add vibrant color and texture to their tropical setups, Selaginella erythropus 'Red Ruby' is an outstanding choice that delivers year-round visual appeal.