Selaginella willdenowii is a lush, moss-like aquatic plant that thrives in humid, low- to medium-light aquariums and paludariums. This guide highlights five closely related options, including the centerpiece Selaginella Siamensis and compatible companions for foreground to midground interest. Best for hobbyists seeking textured greenery, easy maintenance, and a natural look that encourages lush coverage in terrariums, paludariums, and emersed setups. The following selections balance plant type, ease of care, and value for beginner to intermediate aquarists. See the quick product table below for a snapshot comparison.
| Product | Type | Best For | Limitation |
|---|---|---|---|
| Selaginella Siamensis | Emersed Terrarium Plant | Humid, low–medium light tanks | Grows slowly |
| Java Fern Microsorum | Low Light Aquarium Plant | Low-maintenance setups | Size varies |
| Java Fern & Anubias Bundle | Hardy Foreground Plants | Beginners, mixed aquascapes | Size variation |
| Alternanthera Rosanervig | Red Stem Plant | Colorful midground accents | Requires attention to light |
| Salvinia Minima | Floating Plant | Natural filtration and shade | May require thinning |
SubstrateSource Selaginella Siamensis
Selaginella Siamensis features soft, lacy foliage in vivid green to lime hues, ideal for terrarium, paludarium, or emersed layouts. Best for humid, low- to medium-light environments with consistent moisture and stable warmth. Ships potted and ready for placement—remove from pot, moisten roots, and plant in terrarium or emersed setups for a natural touch. Best for buyers seeking a showy, textured green accent that thrives where moisture is steady.
Who it’s best for: hobbyists building emersed displays or terrariums who want a ready-to-place, lush green foreground or midground plant. Limitation: growth is slower than typical aquatic stem plants, so full coverage takes time.
Marcus Fish Tanks Hornwort
Hornwort is a versatile, easy-care option for beginners. It comes in a bundle and grows compact stems around 5–10 inches. It tolerates a range of light levels and helps with water quality by providing surface area for beneficial bacteria. Best for buyers seeking a hardy, fast-growing background plant that complements delicate foreground species like Selaginella. Caution: water temperature swings can stress live plants, especially during extreme weather.
Floating Flowering Plant: Water Hyacinth
Water Hyacinth provides surface coverage, shade, and natural filtration by helping control nitrates and ammonia. It’s a good complement for plants like Selaginella Siamensis to create a balanced, shaded microclimate. Best for buyers wanting rapid surface coverage and water purification benefits. Limitation: floating plants may require regular thinning to prevent blocking light to submerged species.
SubstrateSource Red Stem Plants — Alternanthera Rosanervig
Alternanthera Rosanervig brings vibrant pink to red tones, making it an eye-catching foreground or midground contrast against green Selaginella. Best for buyers who want a bold color accent in a beginner-friendly stem plant. Choose this if you want a colorful focal point. Limitation: requires more stable light and nutrient conditions to achieve the pink/red coloration as pictured.
Java Fern Microsorum Pteropus
Java Fern is a low-light, easy-to-care-for aquarium plant that pairs well with Selaginella for a natural, shaded look. It grows slowly to moderate height and can attach to décor rather than require substrate, making it versatile for aquascapes. Best for buyers seeking reliable greenery with minimal maintenance and compatibility with emersed or submerged arrangements. Limitation: some Java Fern varieties may spread slowly in very low light.
Java Fern and Anubias Bundle
This bundle combines Anubias barteri with Java Fern, offering a hardy, low-maintenance duo ideal for beginners and seasoned aquarists alike. Best for buyers who want a reliable, low-light setup with compact growth and easy attachment to wood or rocks. Limitation: Anubias and Java Fern stay relatively small, so they may not dominate larger tanks without additional plants.
Buying Guide: Key Purchase Considerations
- Light levels: Most Selaginella and Java Fern varieties prefer low to medium light. Avoid high-intensity lighting that can promote algae growth and stress sensitive species.
- Moisture and humidity: Emersed and terrarium placements require consistent moisture. If transitioning to submerged tanks, acclimate slowly to avoid shock.
- Growth rate and space: Fast-growing stems like Alternanthera can fill space quickly, while Selaginella Siamensis and Java Fern grow more slowly. Plan your aquascape accordingly.
- Color and contrast: Use red-toned stems or rosette plants to create visual interest against green, lacy foliage for depth perception.
- Compatibility: Combine floating plants, foreground grasses, and midground ferns to create layered structure and habitat diversity for fish and invertebrates.
FAQ
- What light level is best for Selaginella willdenowii? Best in low to medium light environments with stable humidity and moisture.
- Can Selaginella Siamensis be planted submerged? It grows best emersed or in humid terrarium settings; may tolerate brief submersion but aesthetic is emersed-friendly.
- How quickly do these plants grow? Growth rates vary: some, like Hornwort and Water Hyacinth, grow quickly, while Selaginella Siamensis and Java Fern tend to grow slower.
- Do these plants require CO2 supplementation? For most hobby setups, CO2 is not necessary; however, stable nutrients and consistent water parameters support healthier growth, especially for colorful or dense plantings.
- Are these plants safe for beginner aquariums? Yes, the selection includes hardy, low-maintenance options suitable for beginners and mixed layouts.
- Can I use these plants in paludariums? Yes, several selections are well-suited for emersed paludarium setups due to their humidity tolerance and growth forms.