🌿 Microsorum pteropus ‘Thor’s Hammer’ – Rare Java Fern with Hammer-Shaped Leaf Tips

Microsorum pteropus ‘Thor’s Hammer’, commonly referred to as Java Fern Thor’s Hammer, is a rare and uniquely shaped variety of the classic Java Fern, celebrated for its bold, flaring leaf tips that resemble the shape of a hammer—hence the name. This striking form adds an element of strength and visual intrigue to aquascapes, making it a standout in both natural and artistic layouts.

At Aquarium Plants Factory, we cultivate Thor’s Hammer in its emersed form, promoting strong rhizome growth and leaf development. Once introduced to your aquarium, this plant transitions well to submerged life, forming a dramatic cluster of rich green foliage that brings height, texture, and character to the midground or background of your layout.

Like all Microsorum varieties, this plant is rhizome-based and should be attached to driftwood, rock, or hardscape surfaces—never planted in substrate, which can lead to rhizome rot. With its slow growth rate and tolerance for low to medium light, Thor’s Hammer is an excellent choice for aquarists of all experience levels, especially those working with low-tech tanks or seeking bold botanical structure.

🌟 Key Features:

• Hammer-Shaped Leaf Tips: Unique and rare flared tips create a bold and sculptural look

• Attachable Rhizome Plant: Grows best mounted on wood, stone, or other hardscape—no substrate needed

• Hardy and Easy Care: Thrives without CO₂; ideal for low- to medium-light setups

• Emersed Grown: Nursery-grown in emersed conditions for a healthy start

• Perfect for Feature Zones: Adds strong vertical form and texture to midground and background

🔎 Botanical Information:

• Scientific Name: Microsorum pteropus ‘Thor’s Hammer’

• Synonyms: Leptochilus pteropus ‘Thor’s Hammer’

• Common Names: Java Fern Thor’s Hammer

• Plant Type: Rhizome plant

• Placement: Attach to driftwood, stone, or hardscape

• Growth Rate: Slow

• Lighting: Low to Medium

• Origin: Southeast Asia

💡 Optimal Growing Conditions:

• Lighting: Low to medium lighting promotes healthy, steady growth

• CO₂ & Fertilization: CO₂ is not required; occasional fertilization supports leaf strength

• Water Parameters:

  • pH: 6.0–7.5

  • Temperature: 68–82°F (20–28°C)

  • Water Hardness: Soft to moderately hard

🌱 Growth & Propagation:

• CO₂ Requirement: Not required

• Nutrient Substrate: Not required

• Can Grow Emersed: Yes

• Propagation Method: Rhizome division

📦 What You’ll Receive:

Sold as loose bare-root plants, bunched plants, or potted plants:

• Bare-root Plants: Approximately 3+ leaf portion, loose rhizome

• Bunched Plants: Approximately 3+ leaf portion bundled with foam and plant weight

• Potted Plants: Approximately 3+ leaf portion, potted in rockwool and net pot

⚠️ Disclaimer:

Photos are sample representations. Actual plants may vary in size, shape, or coloration. Unless otherwise specified, we do not guarantee plants are free of pests, pesticides, or exclusively submerged-grown.

🚫 State Restrictions Notice ♻️ Be a Responsible Aquatic Plants Owner

Never release Java Fern Thor’s Hammer—or any aquarium plant—into natural waterways. Always dispose of trimmings and unwanted portions responsibly to protect local ecosystems.