Sagittaria latifolia

Sagittaria latifolia is a widespread North American aquatic plant found throughout the continent from southern Canada to Mexico, inhabiting the shallow margins of ponds, rivers, and wetlands. Submerged leaves are elongated and strap-like when grown fully underwater, transitioning to the distinctive arrowhead shape above the waterline. In aquariums, the submerged form produces medium-length, upright, mid-green leaves on slender petioles, forming a natural, grass-like midground presence at 20–40 cm.

The plant spreads steadily through horizontal runners, gradually colonising available substrate and providing dense cover for bottom-dwelling fish and fry. It is tolerant of a very wide range of water parameters including hard and brackish water, making it one of the most adaptable aquatic plants available to aquarists. It does not require CO2 injection and performs well under low-to-medium lighting.

S. latifolia is an excellent choice for North American biotope aquariums housing native fish species, providing an authentic native plant complement to species such as sunfish, bass, or North American killfish. It also works well in general community tanks where natural, understated planting is preferred.

Light: Low to medium (20–50 PAR); adapts well to a wide lighting range. CO2: Not required; grows without supplementation in most conditions. Fertilisation: Root tabs every 3–4 months; low-dose liquid fertiliser every 1–2 weeks. Placement: Midground to background; plant 8–12 cm apart; runners will spread to fill the area. Propagation: Continuous runner production — sever daughter plants once they have developed roots.