Polytrichaceae
Polytrichum juniperinum
Polytrichum juniperinum
Zones 4–9Sun Partial ShadeWater HighCare Moderate
Native Plants · Moss · Haircap Moss · Terrarium · Ground Cover · Woodland · Shade Plant · Acidic Soil · Bryophyte · Low Maintenance · Polytrichum
Pet-safe
Currently out of stock everywhereStock updated 9/6/2026
Juniper haircap moss is a resilient, ground-covering moss that grows best in acidic, moist soil with bright indirect or dappled light. It does not require fertiliser and simply needs humidity and consistent moisture to establish into a dense, attractive carpet. It is ideal for terrariums, woodland gardens, and shaded rock gardens.
Growing conditions
The details behind the basics
- Daily light
- 3 hours
- Watering
- Mist or water lightly to keep substrate evenly moist; avoid standing water · Every 3-5 days or as surface begins to dry
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 5.5–7
- Temperature
- -25°F to 85°F
- Cycle
- Perennial
- Propagation
- Seed
Hardiness
USDA 4b-9b
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Form & growth
Mature size and habit
- Mature height
- 12 in – 3 ft
- Spread
- 2 ft
- Spacing
- 4 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
Sources: trefle
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