Java Fern

Description

Java Ferns are hardy, slow-growing aquarium plants known for their dark green, leathery leaves and unique hammered pattern, which are attached to a creeping rhizome rather than planted in substrate. They tolerate a wide range of conditions, thriving in low-to-moderate light, a broad pH range (5-8), and temperatures between 65-83°F (18-28°C). As epiphytes, they absorb nutrients from the water and are highly resistant to fish, making them an excellent, low-maintenance choice for beginners.

Key Characteristics

Epiphytic Growth:

Java Ferns are epiphytes, meaning they naturally grow on surfaces like driftwood and rocks and should not be planted in the substrate, as this can smother the rhizome.

Rhizome:

The leaves grow from a horizontal, creeping rhizome from which fibrous roots also sprout.

Hardy & Resilient:

The plant’s thick, leathery leaves have a bad taste, making them unpalatable to most fish, and they are highly resistant to herbivores.

Variety of Forms:

While the common variety has long, broad, undivided leaves, Trident Java Fern has lobed leaves, and Needle Leaf varieties feature narrow, pointed leaves, offering different aesthetic options.

Care & Water Parameters

Lighting:

Low to moderate lighting is ideal. High-intensity lighting can scorch the leaves, causing them to become thin, transparent, and brown.

Attachment:

Attach the rhizome to a piece of driftwood, rock, or other hardscape to allow the plant to grow.