How to Grow Peacock Moss
Wikimedia Commons
Peacock Moss
Selaginella uncinata
grassPeacock moss is a delicate, iridescent creeping plant belonging to the Selaginellaceae family, not a true moss. It is prized for its shimmering blue-green foliage that displays metallic peacock-like colors, especially in humid conditions. This low-growing groundcover is popular in terrariums, shade gardens, and as a houseplant accent.
When should you plant Peacock Moss in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Peacock Moss timeline · Pittsburgh, PA (Zone 6b)
-
Plant Peacock Moss
Around Apr 17Near Pittsburgh's average last spring frost.
-
Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
-
Harvest Peacock Moss
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Peacock Moss dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 9b-11; excellent as a houseplant in cooler climates
Sign up free to see if Peacock Moss grows in your zone — and get a personalized planting timeline.
Get my Peacock Moss timeline →Growth Stages
Establishment
2-4 weeksNewly planted or propagated stems are pale green and delicate, establishing root contact with substrate.
Maintain high humidity (70-80%) and consistent moisture. Provide bright indirect light. Avoid moving the plant during this phase.
Vegetative Growth
4-12 weeksFronds become more robust and the characteristic iridescent blue-green coloring develops, especially with proper light and humidity.
Maintain humidity above 60%. Ensure bright indirect light to enhance the peacock blue coloration. Mist 1-2 times daily or use a humidity tray.
Maturation
8-18 months ongoingPlant forms a lush carpet or mounding growth pattern with fully developed iridescent fronds displaying maximum color vibrancy.
Continue consistent moisture and high humidity. Provide bright filtered light. Pinch back leggy growth to encourage bushier development.
Propagation-Ready
Ongoing once matureMature stems produce adventitious roots along their length and can be easily divided or layered to create new plants.
Healthy stems can be gently separated and replanted in moist substrate. Pin down stem nodes to soil surface to encourage rooting.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
-
Increase humidity to 70%+ which deters spider mites. Mist regularly. Isolate affected plants. Spray with neem oil or insecticidal soap if severe.
-
Allow soil surface to dry slightly between waterings. Use sticky traps. Improve air circulation. Apply beneficial nematodes or sand topdressing if infestation develops.
-
Isolate plant immediately. Wipe affected areas with 70% isopropyl alcohol on a cotton swab. Spray with insecticidal soap. Reapply every 7-10 days.
-
Remove manually with soft brush or cotton swab. Spray with horticultural oil or insecticidal soap. Ensure good air circulation to prevent reinfestation.
Uses
Terrarium & Vivarium Accent
CraftPeacock moss is exceptional as a foreground or midground element in sealed terrariums, paludariums, and tropical vivariums due to its low growth habit and iridescent beauty. [source]
Indoor Shade Groundcover
HouseholdCreates an elegant living carpet in shaded indoor spaces, tabletop displays, and under plant light shelves where humidity can be maintained. [source]
Humidity Indicator
HouseholdThe intensity of the iridescent blue coloration increases with humidity levels, making peacock moss an attractive living indicator of ambient moisture. [source]
Microhabitat Creation
WildlifeIn naturalistic terrariums and vivariums, peacock moss provides shelter and substrate for small invertebrates, dart frogs, and other moisture-loving microfauna. [source]
Botanical Specimen Collection
HouseholdPrized by plant collectors for its unique iridescent coloration and the challenge of maintaining optimal growing conditions, making it a conversation-piece houseplant. [source]
Harvest Tips
Peacock moss is ornamental and not harvested for consumption. For propagation, take 2-3 inch stem cuttings year-round and root them in moist peat-based substrate under high humidity. Mature plants can be divided gently and repositioned as groundcover or terrarium accents.
Fun Facts
- 🌱 Peacock moss's iridescent blue-green color is not due to pigmentation but rather to the cellular structure of its leaves, which refracts light similarly to butterfly wings—the color intensifies in bright humidity.
- 🌱 Despite its common name 'moss,' Selaginella uncinata is not a true moss but a lycophyte (club moss), placing it in an ancient plant lineage that has existed for over 400 million years.
- 🌱 In its native habitat (China and Southeast Asia), peacock moss grows as an epiphyte on trees in tropical rainforests, making it naturally suited to the constant moisture and dappled light of terrarium environments.
Join 30,000 gardeners planning their gardens with LizPlants.
Get your personalized Peacock Moss planting timeline
Tell us your zip code and we'll calculate exactly when to start Peacock Moss seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.
Get my Peacock Moss timeline →