About Spike Moss
Spike Moss Introduction
Spike Moss (Selaginellaceae) is a unique and fascinating plant that belongs to the family Selaginellaceae. Despite its name, it is not a true moss but rather a primitive vascular plant that has been around for millions of years. Native to tropical and subtropical regions worldwide, Spike Moss is known for its ability to thrive in diverse environments, from rainforests to desert rock crevices.
One of the most notable features of Spike Moss is its appearance, which resembles a cross between a fern and a moss. It forms dense, low-growing mats of small, scale-like leaves arranged in spirals or rows along branching stems. The plant’s color can vary from bright green to bluish-green, and some species even display iridescent hues. This unique appearance has made Spike Moss a popular choice for terrariums and as a groundcover in shaded garden areas.
Spike Moss is particularly interesting from an evolutionary standpoint. It is one of the few surviving members of the lycophytes, an ancient group of plants that were dominant during the Carboniferous period, about 360 to 286 million years ago. Unlike true mosses, Spike Moss has a vascular system for transporting water and nutrients, making it more closely related to ferns and seed plants. It reproduces via spores, which are produced in small, cone-like structures at the tips of its branches, adding to its prehistoric charm and scientific significance.
Spike Moss Care & Growing Guide
Caring for Spike Moss (Selaginellaceae) can be a rewarding experience, as these ancient plants are generally low-maintenance and can thrive in various indoor and outdoor settings. To ensure the best growth and health of your Spike Moss, it’s essential to recreate its natural habitat as closely as possible. This primarily involves providing the right balance of moisture, light, and humidity.
One of the most critical aspects of Spike Moss care is maintaining consistent moisture. These plants prefer consistently moist soil but are susceptible to root rot if overwatered. It’s best to water thoroughly when the top layer of soil begins to feel dry, ensuring good drainage to prevent waterlogging. In terms of light, Spike Moss thrives in bright, indirect light. While it can tolerate some direct light, especially in cooler climates, too much direct sun can scorch its delicate leaves. If growing indoors, a north- or east-facing window is often ideal.
Humidity is another crucial factor in Spike Moss care. Being native to tropical and subtropical regions, these plants appreciate high humidity levels. In drier environments, you may need to mist the plant regularly or use a humidity tray to maintain the moisture in the air around it. Temperature-wise, Spike Moss prefers warm conditions and doesn’t tolerate cold well. Most species do best in temperatures between 60Β°F and 80Β°F (15Β°C to 27Β°C). Lastly, while Spike Moss doesn’t require frequent fertilization, applying a well-balanced, organic fertilizer at quarter strength every month during the growing season can promote healthy growth and vibrant color.
Soil
Spike Moss (Selaginellaceae) thrives in well-draining, consistently moist soil rich in organic matter. The ideal soil composition should be a mix of peat moss, perlite or pumice, and loamy soil, which provides both moisture retention and good drainage. The preferred pH range for most Spike Moss species is slightly acidic to neutral, typically between 6.0 and 7.0.
Proper drainage is crucial for Spike Moss, as it is susceptible to root rot if the soil becomes waterlogged. To improve drainage, you can add extra pumice or perlite to the soil mix. The soil should be able to retain some moisture while allowing excess water to drain freely.
Soil problems that can affect Spike Moss include:
1. Poor drainage: Can lead to root rot and fungal diseases.
2. Compaction: Restricts root growth and water penetration.
3. Inappropriate pH: Can affect nutrient uptake and overall plant health.
4. Salt build-up: Often caused by over-fertilization or hard water, can damage roots.
5. Nutrient deficiencies: May occur in poor-quality soils or due to incorrect pH.
6. Pot boundness: Can occur if the plant outgrows its container, restricting growth.
To maintain optimal soil conditions, consider adding organic matter such as compost or leaf mold to the soil mix. This helps improve soil structure, nutrient content, and moisture retention. Regularly check the soil moisture and adjust watering accordingly to prevent both drought stress and overwatering. If growing in containers, ensure they have adequate drainage holes and consider repotting every 1-2 years to refresh the soil and prevent pot boundness.
Fertilizer
Spike Moss (Selaginellaceae) has relatively low fertilizer needs compared to many other plants. However, regular, light feeding can promote healthy growth and vibrant color.
Recommended fertilizer mixture:
– Use a well-balanced, organic fertilizer (e.g., 5-5-5 or 10-10-10)
– Dilute to 1/4 or 1/2 of the recommended strength
Optimal fertilizing schedule:
– Feed monthly during the growing season (spring and summer)
– Reduce or stop fertilizing in fall and winter when growth slows
Signs of over-fertilization:
– Leaf burn or browning edges
– Wilting despite adequate watering
– Salt crust on soil surface
– Stunted growth
Signs of under-fertilization:
– Pale or yellowing leaves
– Slow or stunted growth
– Small new leaves
Organic fertilizer alternatives:
– Compost tea
– Diluted seaweed extract
– Worm castings
Specific nutrient requirements:
– Spike Moss generally doesn’t have high demands for specific nutrients
– A slight nitrogen boost can promote lush growth
– Magnesium deficiency can sometimes occur, indicated by yellowing between leaf veins
To address nutrient deficiencies:
– Ensure proper soil pH (6.0-7.0) for optimal nutrient uptake
– If using tap water high in minerals, occasional flushing of the soil can prevent nutrient imbalances
Remember, it’s generally better to under-fertilize than over-fertilize Spike Moss. Always monitor your plant’s response to fertilization and adjust accordingly.
Watering
Spike Moss (Selaginellaceae) requires consistent moisture but is sensitive to overwatering. The soil should be kept evenly moist but not waterlogged. Water thoroughly when the top inch of soil begins to feel dry, allowing excess water to drain freely. If using a moisture meter, water when it reaches 4.
Water quality preferences:
– Rainwater or distilled water is ideal
– If using tap water, allow it to sit out overnight to dissipate chlorine
Signs of underwatering:
– Curling or crisping of leaves
– Browning of leaf tips
– Overall wilting appearance
Signs of overwatering:
– Yellowing leaves
– Soft, mushy stems
– Fungal growth on soil surface
– Foul odor from the soil
Watering needs may change seasonally:
– Increase frequency during active growth in spring and summer
– Reduce watering in fall and winter when growth slows
During different growth stages:
– Young plants may require more frequent watering
– Established plants can tolerate slightly drier conditions
Consider using a moisture meter or the finger test to accurately gauge soil moisture before watering. Always empty any water that collects in the saucer beneath the pot to prevent root rot.
Lighting
Spike Moss (Selaginellaceae) thrives in bright, indirect light. In its natural habitat, it often grows on forest floors or in shaded areas, so the plant is adapted to filtered light. Indoors, place the plant near a north- or east-facing window where it can receive plenty of light without being exposed to harsh, direct light.
Signs of insufficient light include:
– Elongated, spindly growth
– Pale or yellowing leaves
– Slow or stunted growth
– Loss of lower leaves
Signs of excessive light exposure include:
– Bleached or scorched leaves
– Curling or crisping of leaf edges
– Overall stressed appearance
If natural lighting conditions are suboptimal, you can adjust by:
1. Using sheer curtains to filter strong light
2. Moving the plant further from or closer to a window as needed
3. Supplementing with artificial full-spectrum grow lights, especially in low-light environments
4. Rotating the plant regularly to ensure even light exposure on all sides
Remember that different Spike Moss species may have slightly different light requirements, so it’s important to observe your specific plant and adjust conditions accordingly.
Temperature
Spike Moss (Selaginellaceae) thrives in warm temperatures, reflecting its tropical and subtropical origins. The ideal temperature range for most Spike Moss species is between 60Β°F and 80Β°F (15Β°C to 27Β°C).
Temperature tolerance and tips:
1. Can tolerate brief periods slightly below 60Β°F, but prolonged exposure to cold can damage the plant
2. Avoid placing near drafty windows or air conditioning vents
3. Protect from sudden temperature fluctuations
4. Some species can tolerate temperatures up to 90Β°F (32Β°C), but most prefer cooler conditions
Cold sensitivity:
– Symptoms of cold damage include wilting, browning of leaves, and stunted growth
– If exposed to cold, move the plant to a warmer location gradually to prevent shock
Heat sensitivity:
– While heat-tolerant, extreme temperatures can cause stress
– Signs of heat stress include curling leaves and increased water needs
Protecting from extreme temperatures:
1. In winter, move plants away from cold windows
2. Use insulating materials like bubble wrap around pots if needed
3. In summer, provide shade during the hottest part of the day
4. Consider using a temperature-controlled greenhouse or terrarium for optimal conditions
Remember that temperature requirements may vary slightly between different Spike Moss species, so it’s important to research the specific needs of your variety.
Humidity
Spike Moss (Selaginellaceae) thrives in high humidity environments, typically preferring levels between 50% to 80%. This reflects its natural habitat in tropical and subtropical regions.
To increase humidity:
1. Use a pebble tray filled with water placed beneath the plant
2. Group plants together to create a microclimate
3. Use a room humidifier
4. Mist the plant regularly, especially during dry seasons
To decrease humidity (rarely necessary):
1. Improve air circulation with fans
2. Reduce misting and other humidity-increasing measures
Symptoms of low humidity stress:
– Browning leaf tips
– Crispy or curling leaves
– Slow growth
– Increased susceptibility to pests
Symptoms of high humidity stress (uncommon):
– Fungal growth on leaves or soil
– Soft, mushy growth
Specific humidifying methods:
1. Pebble trays: Effective and low-maintenance, but limited range
2. Misting: Provides temporary boost, requires frequent application
3. Humidifiers: Most effective, allows precise control of humidity levels
4. Terrariums: Excellent for maintaining high humidity, but requires careful monitoring to prevent excess moisture
For Spike Moss, a combination of methods often works best, with humidifiers and terrariums being particularly effective for maintaining consistent humidity levels.
Propagation
Propagating Spike Moss (Selaginellaceae) can be done through division or stem cuttings. Here’s a detailed step-by-step guide:
Method 1: Division
1. Choose a healthy, mature plant for division.
2. Carefully remove the plant from its pot.
3. Gently separate the plant into smaller sections, ensuring each has roots and stems.
4. Plant each division in a small pot with fresh, well-draining potting mix.
5. Water thoroughly and place in a warm, humid location with indirect light.
Method 2: Stem Cuttings
1. Select healthy stem tips, about 2-3 inches long.
2. Cut just below a leaf node using clean, sharp scissors.
3. Remove lower leaves, leaving the top cluster intact.
4. Dip the cut end in rooting hormone (optional but can increase success rate).
5. Plant the cutting in a small pot with moist, well-draining potting mix.
6. Cover with a clear plastic bag or humidity dome to maintain humidity.
7. Place in bright, indirect light and keep soil consistently moist.
8. Roots should develop in 3-4 weeks. Gently tug on the cutting to check for resistance.
9. Once rooted, gradually acclimate to normal conditions by removing the plastic cover.
Comparison of success rates:
– Division is generally more successful and produces mature plants faster.
– Stem cuttings have a lower success rate but allow for more new plants from a single parent.
Best time for propagation:
– Spring or early summer, during the active growing season.
Establishment time:
– Divided plants typically establish within 2-4 weeks.
– Stem cuttings may take 4-6 weeks to root and an additional 4-8 weeks to establish.
Remember to maintain high humidity and consistent moisture during the propagation process for the best results.
Potting
Potting and repotting requirements for Spike Moss (Selaginellaceae):
Pot type:
– Use pots with drainage holes to prevent water accumulation.
– Plastic or glazed ceramic pots help retain moisture.
– Terracotta pots can be used but require more frequent watering.
Drainage needs:
– Excellent drainage is crucial to prevent root rot.
Repotting frequency:
– Repot young plants annually.
– Mature plants can be repotted every 2-3 years or when pot-bound.
Ideal soil composition:
– Use a well-draining, peat-based potting mix.
– A mixture of 2 parts peat moss, 1 part perlite or pumice, and 1 part coarse sand works well.
– Alternatively, use a commercial mix designed for ferns or tropical plants.
Signs that indicate repotting is needed:
– Roots growing out of drainage holes.
– Plant drying out quickly despite regular watering.
– Slowed growth or yellowing leaves.
– Soil compaction or poor drainage.
Root pruning:
– Gently trim away any dead, damaged, or excessively long roots.
– Avoid removing more than 1/3 of the root system.
Transitioning to a new pot:
1. Water the plant a day before repotting to reduce stress.
2. Choose a pot 1-2 inches larger in diameter than the current one.
3. Add fresh potting mix to the new pot.
4. Carefully remove the plant from its old pot, loosening the root ball gently.
5. Place the plant in the new pot, ensuring it is at the same depth as before.
6. Fill in with fresh potting mix, firming gently.
7. Water thoroughly and place in a shaded area for a few days to recover.
8. Gradually reintroduce to its normal light conditions.
By following these guidelines, you can ensure your Spike Moss remains healthy and thrives in its potted environment.
Pruning
Best Time for Pruning
Spring or early summer, during the active growing season.
Frequency
As needed, typically 1-2 times per year for maintenance.
Purpose
- Maintain shape and size
- Remove dead or yellowing fronds
- Promote bushier growth
- Improve air circulation
Tools
- Clean, sharp scissors or pruning shears
- Rubbing alcohol for sterilization
Step-by-Step Pruning Guide
- Sterilize your pruning tools with rubbing alcohol.
- Inspect the plant for dead, yellowing, or damaged fronds.
- Cut off any dead or damaged fronds at the base, close to the soil line.
- For shaping, trim back overgrown areas, cutting just above a leaf node.
- To encourage bushier growth, pinch off the tips of stems.
- Remove any fallen debris from the soil surface.
- Water the plant lightly after pruning to reduce stress.
Preparation
Ensure the plant is well-hydrated before pruning to minimize stress.
Aftercare
Place the pruned plant in a location with slightly reduced light for a few days to recover. Resume normal care routine after a week.
Special Considerations
- Avoid heavy pruning in late fall or winter when growth is slower.
- Be cautious not to remove more than 1/3 of the plant’s foliage at once.
- Some Spike Moss species are more sensitive to pruning; research your specific variety.
Blooming
Spike Moss does not produce flowers in the traditional sense. Instead, it reproduces via spores produced in small, cone-like structures called strobili. These structures typically appear at the tips of branches and can be present year-round, depending on the species and growing conditions. The production of spores is often more pronounced during periods of active growth, typically in spring and summer. Optimal conditions for spore production include consistent moisture, bright indirect light, and warm temperatures.
Pests and Diseases
Pests
Common issues
Spider mites
Mealybugs
Scale insects
Symptoms
Spider mites: Fine webbing on leaves, stippling on leaf surfaces
Mealybugs: White, cottony masses on leaves and stems, yellowed leaves
Scale: Small, brown, shell-like bumps on stems and leaves
Treatment
Isolate affected plants
Wipe leaves with a damp cloth to remove pests
Apply insecticidal soap or neem oil
Improve air circulation and reduce humidity to prevent recurrence
Diseases
Common issues
Root rot
Leaf spot
Symptoms
Root rot: Wilting, yellowing leaves, mushy stems near soil line
Leaf spot: Brown or black spots on leaves
Treatment
Root rot: Remove affected parts, repot in fresh, well-draining soil, reduce watering
Leaf spot: Remove affected leaves, improve air circulation, avoid overwatering
For all diseases: Ensure proper watering and avoid overcrowding plants
Special Features
Spike Moss (Selaginellaceae) is known for its unique, prehistoric appearance and ability to survive extreme drought. Some species, like Selaginella lepidophylla, can curl into a tight ball during dry periods and revive when water becomes available, earning it the nickname resurrection plant. This fascinating adaptation, combined with its delicate, fern-like appearance, makes Spike Moss a popular choice for terrariums and as a low-maintenance ground cover in shaded garden areas.
Plant Benefits
While Spike Moss (Selaginellaceae) is not commonly used for herbal or pharmaceutical purposes, some species have been traditionally used in folk medicine. For example, certain Selaginella species have been used in Chinese traditional medicine for treating various ailments. Some studies suggest potential anti-inflammatory and antioxidant properties, but more research is needed to confirm these benefits and their safety for medicinal use.
Additional Information
Spike Moss is not actually a true moss, but a vascular plant more closely related to ferns. It’s one of the oldest plant groups still in existence, with fossil records dating back more than 400 million years. Some species of Spike Moss are known for their iridescent blue color, which is caused by the structural arrangement of their leaves rather than pigmentation.
Life Cycle
Spike Moss (Selaginellaceae) is a perennial plant with a unique life cycle. It reproduces via spores rather than seeds, similar to ferns. The plant produces two types of spores: microspores (male) and megaspores (female). These spores develop into gametophytes, which then produce gametes. After fertilization, a new sporophyte (the main plant) develops. Spike Moss requires consistently moist conditions for spore germination and early growth. Once established, it can survive periods of drought by curling up and entering a dormant state, reviving when water becomes available again. This adaptation allows it to thrive in a variety of environments, from tropical rainforests to desert rock crevices.
Are Spike Moss Poisonous, Toxic
Spike Moss (Selaginellaceae) is generally considered non-toxic to humans, cats, and dogs. However, as with any plant, ingestion may cause mild gastrointestinal upset in some individuals. While no specific toxic compounds have been identified in Spike Moss, it’s always best to prevent pets and children from consuming any part of the plant. If ingestion occurs, monitor for any signs of discomfort or allergic reactions. Symptoms, if any, are typically mild and may include temporary stomach upset or irritation of the mouth and throat. In case of any adverse reactions, consult a healthcare professional or veterinarian. As a preventive measure, keep the plant out of reach of pets and children, and educate family members about not consuming unfamiliar plants.
Frequently Asked Questions
-
How often should I water Spike Moss?
- Water Spike Moss when the top inch of soil feels dry. Keep the soil consistently moist but not waterlogged. Frequency may vary depending on environmental conditions.
-
Is Spike Moss toxic to pets?
- Spike Moss is generally considered non-toxic to pets. However, ingestion may cause mild gastrointestinal upset in some animals.
-
How much light does Spike Moss need?
- Spike Moss prefers bright, indirect light. It can tolerate some direct light, but too much can scorch its delicate leaves.
-
How do I propagate Spike Moss?
- Spike Moss can be propagated through division or stem cuttings. Division is generally more successful and produces mature plants faster.
-
What type of soil is best for Spike Moss?
- Spike Moss thrives in well-draining, consistently moist soil rich in organic matter. A mix of peat moss, perlite or pumice, and loamy soil works well.
-
How often should I fertilize Spike Moss?
- Fertilize Spike Moss monthly during the growing season with a well-balanced, organic fertilizer diluted to 1/4 or 1/2 strength.
-
What humidity level does Spike Moss prefer?
- Spike Moss thrives in high humidity environments, preferring levels between 50% to 80%. Regular misting or using a humidity tray can help maintain proper moisture levels.
-
How often should I repot Spike Moss?
- Young Spike Moss plants should be repotted annually, while mature plants can be repotted every 2-3 years or when they become pot-bound.
-
Is Spike Moss prone to any pests or diseases?
- Spike Moss can be susceptible to spider mites, mealybugs, and scale insects. It may also suffer from root rot if overwatered or kept in poorly draining soil.
-
Can Spike Moss be grown outdoors?
- Spike Moss can be grown outdoors in suitable climates. It prefers shaded areas and can be used as a ground cover in tropical or subtropical regions. In colder climates, the plant is best grown as an indoor plant or in a terrarium.
Can I grow Spike Moss in my indoor space
Difficulty
Intermediate
Size
Small
Light
Medium
Water
Medium
Flowering
No
Pet Safe
Yes
Air Purifier
Low
Selaginella spp. botanical details
Common Name
Spike Moss
Other Common Names
Spikemoss, Clubmoss, Resurrection Plant
Botanical Name
Selaginella spp.
Native Area
Tropical and subtropical regions worldwide, including parts of North and South America, Africa, Asia, and Oceania
Family Name
Selaginellaceae
Plant Type
Perennial
Genus
Selaginella
Kingdom
Plantae
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Plant Puns and Jokes
Why did the Spike Moss refuse to go to the party? Because it was too spore-adic!