Broom Forkmoss
Dicranum Scoparium
Dicranum scoparium, commonly known as Broom Forkmoss, is a beautiful moss native to cool, moist environments. Its lush green appearance and ability to thrive in shaded areas make it a popular choice for gardeners looking to add texture to their landscapes.
Everything it needs
9 essentials at a glance
Watering
Dicranum scoparium prefers consistently moist conditions but can tolerate short periods of dryness.
Water when the top inch of the substrate feels dry, typically every 1-2 weeks depending on humidity and temperature. During hotter months, increase frequency to maintain moisture. Signs of over-watering include yellowing and mushy growth, while under-watering may lead to browning and crispiness of the moss.
Light
This moss thrives in partial shade to full shade, ideally receiving filtered light.
It prefers around 4-6 hours of indirect sunlight daily. Direct sunlight can scorch the moss, while too little light may inhibit growth. Ideal placements include shaded areas beneath trees or on the north side of buildings.
Soil
Dicranum scoparium prefers acidic, well-draining soil with a pH range of 5.0 to 6.5.
A mix of peat moss, pine needles, and sand is recommended to enhance drainage and acidity. Ensure the substrate retains moisture without becoming waterlogged.
Humidity
This moss thrives in high humidity levels, ideally above 60%.
To increase humidity, mist the moss regularly or place it in a terrarium. Signs of humidity stress include browning tips and a dry, brittle appearance. If humidity is too high, ensure adequate air circulation to prevent mold.
Temperature
Dicranum scoparium prefers cool to moderate temperatures, ideally between 50-75°F (10-24°C).
It is hardy in USDA zones 4-8, tolerating frost but not extreme heat. During summer, provide shade to prevent overheating, and ensure it stays moist.
Fertilizing
This moss does not require heavy fertilization.
A diluted liquid fertilizer with a low NPK ratio (e.g., 5-10-5) can be applied once in the spring if growth appears slow. Signs of nutrient deficiency include stunted growth and pale coloration.
Pruning
Pruning is generally not necessary, but if the moss becomes too dense or overgrown, it can be lightly trimmed with scissors.
Remove any dead or brown patches to encourage new growth. Regularly check for debris that may inhibit growth.
Repotting
Repotting is typically not required for mosses, but if the substrate becomes compacted or contaminated, it may be necessary to refresh it.
Signs it needs repotting include poor growth and water retention issues. To refresh, gently remove the moss, replace the substrate, and replant the moss.
Propagation
Propagation can be achieved through division or by transplanting fragments.
To propagate, gently separate a clump of moss and replant it in a suitable substrate. The best time for propagation is in early spring when growth resumes. Ensure the new location has adequate moisture and shade.
When it's unhappy
Browning tips
Why it happens
Low humidity or insufficient watering.
How to fix it
Increase humidity levels by misting or relocating to a more humid area.
Moss turning yellow
Why it happens
Over-watering or poor drainage.
How to fix it
Reduce watering frequency and ensure the substrate drains well.
Moss dying back
Why it happens
Extreme temperatures or prolonged dryness.
How to fix it
Provide shade during hot weather and maintain consistent moisture.
Mold growth
Why it happens
Excess humidity and poor air circulation.
How to fix it
Increase air circulation and reduce humidity levels.
Sparse growth
Why it happens
Insufficient light or nutrients.
How to fix it
Ensure the moss receives adequate indirect light and consider a light fertilizer application.
Care through the year
Spring
In spring, monitor moisture levels as growth resumes. This is a good time for propagation through division.
Summer
During summer, provide shade to prevent overheating and ensure consistent moisture, especially in hotter months.
Fall
In fall, prepare for cooler temperatures by ensuring adequate moisture and consider relocating to a sheltered area if needed.
Winter
In winter, protect from frost and maintain moisture levels. Avoid letting the moss dry out completely.
Toxicity & Safety
Dicranum scoparium is non-toxic to pets and children. It is safe to handle, and ingestion is unlikely to cause any adverse effects.
Good to know
How often should I water my Broom Forkmoss?
Water your Broom Forkmoss when the top inch of the substrate feels dry, typically every 1-2 weeks. Increase frequency during hotter months.
What light conditions are best for Dicranum scoparium?
Dicranum scoparium thrives in partial to full shade, preferring filtered light. Avoid direct sunlight to prevent scorching.
Can I grow Broom Forkmoss indoors?
Yes, Broom Forkmoss can be grown indoors in a terrarium or a shaded area with high humidity. Ensure it receives indirect light.
What should I do if my moss is turning yellow?
Yellowing can indicate over-watering or poor drainage. Adjust your watering schedule and ensure the substrate drains well.
How do I propagate Dicranum scoparium?
You can propagate Broom Forkmoss by dividing clumps or transplanting fragments in early spring. Ensure the new location is moist and shaded.
Is Broom Forkmoss toxic to pets?
No, Dicranum scoparium is non-toxic to pets and children, making it a safe choice for households.
What temperature range is ideal for Broom Forkmoss?
Dicranum scoparium prefers cool to moderate temperatures, ideally between 50-75°F (10-24°C). It can tolerate frost but not extreme heat.
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