Willdenow's Spikemoss
Selaginella Willdenowii
Selaginella Willdenowii, commonly known as Willdenow's Spikemoss, is a unique and attractive plant native to tropical regions. Its lush, green foliage makes it a popular choice for terrariums and indoor gardens, adding a touch of greenery and texture.
Everything it needs
9 essentials at a glance
Watering
Selaginella Willdenowii prefers consistently moist soil but should not be waterlogged.
Water the plant when the top inch of soil feels dry, typically every 5-7 days. In the growing season (spring and summer), increase frequency if the environment is particularly warm or dry. Signs of over-watering include yellowing leaves and root rot, while under-watering may cause leaf curling and browning.
Light
This plant thrives in partial shade to filtered light.
Direct sunlight can scorch its delicate leaves, so place it in a location that receives bright, indirect light for about 4-6 hours daily. It can tolerate low light conditions but may grow more slowly.
Soil
Selaginella Willdenowii prefers a well-draining, organic potting mix with a pH range of 5.0 to 6.0.
A mix of peat, perlite, and pine bark works well, ensuring good drainage while retaining moisture. Avoid heavy soils that retain too much water.
Humidity
This spikemoss thrives in high humidity levels of 50% or more.
To increase humidity, mist the leaves regularly, use a humidity tray, or place a humidifier nearby. Signs of humidity stress include browning leaf tips and overall wilting.
Temperature
The ideal temperature range for Selaginella Willdenowii is between 60-75°F (15-24°C).
It is not frost-tolerant and should be kept in hardiness zones 10-11. Protect it from temperatures below 50°F (10°C) and avoid placing it near heat sources.
Fertilizing
Use a balanced liquid fertilizer with an NPK ratio of 10-10-10, diluted to half strength.
Fertilize every 4-6 weeks during the growing season (spring and summer). Signs of nutrient deficiency include pale leaves and stunted growth.
Pruning
Prune Selaginella Willdenowii as needed to remove any dead or damaged leaves.
Use clean, sharp scissors or pruning shears to make clean cuts. Regular pruning helps maintain its shape and encourages bushier growth.
Repotting
Repot every 1-2 years or when the plant becomes root-bound, indicated by roots growing out of the drainage holes.
Choose a pot that is 1-2 inches larger in diameter. Gently remove the plant from its pot, loosen the roots, and place it in fresh potting mix. Water thoroughly after repotting.
Propagation
Propagation can be achieved through division or by taking stem cuttings.
For division, carefully separate the plant into smaller sections during repotting, ensuring each section has roots. For stem cuttings, take a 4-6 inch cutting, remove lower leaves, and place it in moist soil. Propagation is best done in spring.
When it's unhappy
Yellow leaves
Why it happens
Usually caused by over-watering or insufficient light.
How to fix it
Reduce watering frequency and ensure the plant receives adequate indirect light.
Browning leaf tips
Why it happens
Often a sign of low humidity or underwatering.
How to fix it
Increase humidity through misting or using a humidity tray, and check soil moisture regularly.
Wilting
Why it happens
Can result from either over-watering or under-watering.
How to fix it
Assess soil moisture levels; adjust watering practices accordingly.
Stunted growth
Why it happens
May be due to nutrient deficiency or inadequate light.
How to fix it
Fertilize with a balanced fertilizer and ensure the plant receives sufficient light.
Root rot
Why it happens
Caused by overly wet soil and poor drainage.
How to fix it
Allow the soil to dry out between waterings and ensure proper drainage in the pot.
Care through the year
Spring
In spring, increase watering frequency as the plant begins to actively grow. Fertilize every 4-6 weeks and check for signs of new growth.
Summer
During summer, maintain consistent moisture and humidity levels. Ensure the plant is not exposed to direct sunlight, which can cause leaf scorch.
Fall
In fall, gradually reduce watering as growth slows. Continue to monitor humidity levels, especially if indoor heating is used.
Winter
In winter, reduce watering frequency further, allowing the soil to dry slightly between waterings. Keep the plant in a warm, humid environment.
Toxicity & Safety
Selaginella Willdenowii is non-toxic to pets and children. It is safe to have around cats, dogs, and kids, with no known harmful effects from ingestion.
Good to know
How often should I water my Selaginella Willdenowii?
Water your Selaginella Willdenowii when the top inch of soil feels dry, typically every 5-7 days, adjusting for environmental conditions.
What light conditions are best for Willdenow's Spikemoss?
This plant thrives in partial shade or filtered light, ideally receiving 4-6 hours of bright, indirect light daily to prevent leaf scorch.
How can I increase humidity for my Selaginella Willdenowii?
To increase humidity, mist the leaves regularly, use a humidity tray, or place a humidifier nearby to maintain levels above 50%.
What type of soil is best for Selaginella Willdenowii?
A well-draining, organic potting mix with a pH of 5.0 to 6.0, such as a mix of peat, perlite, and pine bark, is ideal for this plant.
When is the best time to propagate Selaginella Willdenowii?
The best time to propagate is in spring, either through division or stem cuttings, ensuring each section has roots for successful growth.
Why are the leaves of my Selaginella turning yellow?
Yellowing leaves can indicate over-watering or insufficient light. Adjust your watering schedule and ensure the plant receives adequate indirect light.
How do I know when to repot my Selaginella Willdenowii?
Repot when the plant becomes root-bound, indicated by roots growing out of the drainage holes, typically every 1-2 years.
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