Eriocaulon is a genus of aquatic plants in the family Eriocaulaceae. These plants are commonly known as pipeworts and are distributed worldwide, with a concentration of species found in tropical and subtropical regions.
Eriocaulon plants are typically found in marshy areas or shallow water habitats, such as wetlands, ponds, and streams. They have a rosette or tufted growth habit, with long, narrow leaves and a central stem that terminates in a spike-like inflorescence. The flowers of Eriocaulon plants are small and often inconspicuous, with a distinctive cylindrical or cone-shaped structure.
In the aquarium hobby, Eriocaulon plants are highly prized for their unique appearance and their ability to tolerate a wide range of water parameters. They are often used as foreground or midground plants, and their tall, slender leaves create a striking contrast with other aquarium plants. However, Eriocaulon plants can be challenging to grow, as they require high levels of light, carbon dioxide, and nutrient supplementation to thrive. They are also susceptible to melting if their growing conditions are not optimal.