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Spike Moss

Selaginella kraussiana

Family: Selaginellaceae Origin: Africa Fern

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Spike Moss (Selaginella kraussiana)
Photo: JMK · CC BY-SA 3.0 · Wikimedia Commons

Care requirements

Wateringevery 1-2 days — Keep soil consistently moist — never dry out
LightLow to medium, indirect
Humidity60%–90% (ideal 75%)
Temperature15–27°C (ideal 21°C)
FertilizerMonthly during growing season — Balanced 20-20-20 at half strength
SoilWell-draining potting mix (pH 5.5–7.0)

Quick answers

How often should I water Spike Moss?

Water Spike Moss every 1-2 days. Keep soil consistently moist — never dry out.

How much light does Spike Moss need?

Spike Moss grows best in low to medium, indirect light. It tolerates lower light levels, though growth slows. Protect it from harsh direct sun, which can scorch the leaves.

What is the most common problem with Spike Moss?

Yellow leaves is the most common problem. Likely causes: overwatering, poor drainage, cold drafts. What to do: reduce watering; check drainage holes; move to a warmer spot.

Common problems & fixes

Yellow leaves

Causes: Overwatering, Poor drainage, Cold drafts

Fix: Reduce watering; Check drainage holes; Move to a warmer spot

Brown tips

Causes: Low humidity, Fluoride in tap water, Underwatering

Fix: Increase humidity; Use filtered water; Water more consistently

Root rot

Causes: Overwatering, Heavy soil, No drainage holes

Fix: Repot in well-draining soil; Allow soil to dry; Trim mushy roots

Pests

Causes: Mealybugs, Spider mites, Scale

Fix: Wipe with insecticidal soap; Isolate the plant; Check new plants before bringing home

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