Eleocharis parvula is a miniature hairgrass closely related to Eleocharis acicularis, producing extremely fine, short stems that stay compact and low, typically reaching just 3–7 cm in height. This makes it one of the smallest and most delicate aquarium carpeting plants available, ideal for creating a refined, close-cropped foreground.
It grows under medium light without CO2, though carpeting is a slow process without supplemental carbon dioxide. CO2 injection and a nutrient-rich substrate accelerate lateral spread via runners considerably. It is a rewarding foreground plant for patient hobbyists who want a delicate, natural carpet effect.
Supplied as an established potted plant, Eleocharis parvula suits aquariums from 30 litres upward. Planting in small tufts spaced 2–3 cm apart across the foreground allows the runners to fill in the gaps over several weeks, building into a fine, even grassy carpet.