Polytrichaceae
Polytrichum strictum
Polytrichum strictum
Zones 4–9Sun Partial ShadeWater ModerateCare Moderate
Native Plants · Moss · Bog · Groundcover · Shade · Terrarium · Moisture-Loving · Perennial · Bryophyte · Cool-Climate · Native
Pet-safe
Currently out of stock everywhereStock updated 9/6/2026
Bog haircap moss thrives in cool, moist, partially shaded environments such as bogs, tundra, and woodland edges. Keep it consistently humid and never allow it to fully dry out. It is best suited for outdoor terrariums, moss gardens, or bog landscapes rather than conventional indoor settings.
Growing conditions
The details behind the basics
- Daily light
- 3 hours
- Watering
- Mist or water lightly to keep consistently moist but not waterlogged · Every 5-7 days or whenever surface appears dry
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 6–7.5
- Temperature
- -20°F to 90°F
- Cycle
- Perennial
- Propagation
- Seed, Division
Hardiness
USDA 4a-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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