Sagittaria subulata (Needle Leaf)

07 November 2026

Sagittaria subulata is a grass-like, rosette-forming aquarium plant sold as Needle Leaf or Dwarf Sagittaria. Its narrow leaves arise from a basal crown and it spreads by runners, forming a low to medium-height patch when grown submerged. The exact form can vary considerably: some specimens remain compact, while others produce taller leaves under aquarium conditions. Identification is reasonably clear from the supplied label and plant appearance, but cultivar or commercial-form distinctions cannot be confirmed from images alone.

Identification

Sagittaria subulata is a rooted aquatic plant in the arrowhead genus Sagittaria. It forms narrow, strap-like leaves from a basal rosette and produces lateral runners that develop daughter plants. The trade name Needle Leaf describes the slender foliage. Commercial plants may differ in leaf width and mature height, so a precise cultivar identification is not possible from the supplied images alone.

Placement and appearance

Plant it in the foreground or lower middle ground, allowing room for runners to spread. Individual leaves are usually green to light green and may arch with age. Under stronger light or crowded conditions, plants can become taller and less lawn-like. Regular thinning keeps the group low and prevents it from covering smaller foreground plants.

Planting

Remove the culture material or other packing from the roots and divide the clump into small portions. Insert each portion into nutrient-rich substrate with the crown level with, or slightly above, the substrate surface. Do not bury the crown, because this can cause rotting. Leave a little space between portions so new runners can establish.

Cultivation

This species generally adapts to a wide range of freshwater aquarium conditions and can grow with low to moderate light. Consistent lighting, available nutrients, and a stable photoperiod support denser growth. Root fertilization can be useful in an inert substrate, while a complete water-column fertilizer helps when other nutrients are limited. Carbon dioxide is not essential, although supplementation may improve growth and density.

Propagation and maintenance

Propagation is mainly by runners. Once a daughter plant has developed several leaves and roots, separate the connecting runner with clean scissors and replant it. Remove damaged or excessively long leaves at the base. Trim and thin the planting periodically to maintain circulation and keep the intended height.

Identification note

The supplied product label identifies Sagittaria subulata 'Needle Leaf', and the narrow-leaved rosette is consistent with that identification. Aquarium plants sold under this name can vary in form, however; the images do not establish a particular cultivated clone or confirm the full geographic origin of the commercial material.

Plant info

Colors: Green, Light green
Difficulty: Easy
Usage: Foreground
Type: Rosette-forming rooted aquatic plant
Growth rate: Fast
Height: 5-30 cm
Light demand: Low
CO2: Low

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