Native to South America, Sagittaria subulata is an adaptable and undemanding marsh plant well-suited to beginner hobbyists. Also referred to as ‘Dwarf Sagittaria,’ S. subulata has narrow, grass-like leaves and can be kept as a short and dense carpet in the foreground of a tank. However, given variable tank conditions, this species can surpass 30 cm in height. Low light conditions inhibit vertical growth whereas intense lighting encourages it, as will CO2 supplementation.
Individual specimens may be planted 2 to 4 cm apart. Over time, S. subulata will propagate autonomously through runners and gaps between specimens will fill. These runners can be pinched off and replanted to control or confine the thick, carpet-like growth. We recommend both substrate and water column fertilization as S. subulata is very sensitive to iron deficiencies and will quickly fade or yellow when iron levels are low.
Size: 5 – 50cm in height
Position and Usage: Foreground to background placement
Growth rate: Fast
Lighting: 2/5 - 4/5
Water Conditions: 22 - 28°C; pH of 6.5 to 7.5 recommended
CO2: Recommended but not required
Special Requirements: Iron supplementation