Martens' spikemoss (Selaginella martensii)

Martens' spikemoss

Selaginella martensii

A lush, fern-like lycophyte that carpets the forest floor with its branching, scale-like foliage. Evergreen perennial; other names: Martens' spikemoss.

Prefers bright indirect light or partial shade; avoid direct sunlight which can scorch the delicate foliage.
3/week
Moderate
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Plant Needs

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Sunlight Prefers bright indirect light or partial shade; avoid direct sunlight which can scorch the delicate foliage.
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Watering Requires consistently moist soil and high ambient humidity; do not let the soil dry out.
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Temperature Prefers warm, tropical temperatures and is highly sensitive to frost and cold drafts.
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Characteristics

  • Leaves: Tiny, scale-like, overlapping, arranged in four ranks along the stems, bright green, sometimes with silvery tips;
  • Stems: Branching, somewhat upright then trailing or creeping, producing rhizophophores (root-bearing leafless branches) at the base;
  • Reproduction: Non-flowering, produces spores in strobili (cones) at the tips of the branches.
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Care Guide

Watering

Water frequently to keep the soil evenly moist, ensuring good drainage.

Fertilization

Apply a highly diluted balanced liquid fertilizer.. Selaginella are sensitive to heavy fertilization; always use at half or quarter strength.

Aquarium Water:Use water from routine freshwater aquarium changes; it provides gentle, low-dose nutrients perfect for sensitive lycophytes. Avoid if aquarium water contains added salts or medications.
Pruning
  • Snip off any brown or dried stems at the base to maintain appearance;
  • Trim to maintain a compact shape if the plant becomes too leggy;
  • Remove fallen debris from the center of the plant to prevent fungal rot.
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: Non-toxic to cats per ASPCA guidelines for most Selaginella species.

Humans: Generally considered non-toxic to humans.

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Garden Uses & Culture

Culture: Highly prized during the Victorian fern craze (Pteridomania) in 19th-century Britain, often featured in ornate glass Wardian cases to maintain the high humidity it requires.

Usage: - Excellent for terrariums and bottle gardens; - Indoor potted foliage plant for humid areas like bathrooms; - Ground cover in tropical conservatories and greenhouses.