Hygrophila stricta

Hygrophila stricta is a larger, more architectural species than its commonly kept cousin H. polysperma, producing big, lance-shaped leaves with clearly impressed venation on stiff, upright stems. In emergent conditions it develops into a substantial shrubby plant that can reach 60 cm or more, making it one of the most impressive background specimens available for large paludariums with a tropical stream or lake-margin theme. Its bold, large leaves provide visual contrast against finer-textured plants.

It is a robust and easy grower in the emergent zone, tolerating a wide range of light levels and temperatures. Flower spikes with small lavender blooms appear at the upper nodes of established plants under good conditions, adding seasonal interest. Pruning the main stem encourages branching and a denser, more attractive background mass.

Light: Medium to high; 2,000–5,000 lux; strong light produces the most compact, deeply coloured growth. CO2/Humidity: No CO2; roots in water or saturated substrate; emergent stems in warm humid air above. Fertilisation: Weekly dilute liquid fertiliser; as a large, fast grower it benefits from regular macro and micronutrient feeding. Placement: Plant in deep substrate at the back of the water section near the background panel; stems grow upward naturally. Propagation: Stem tip or mid-stem cuttings replanted in substrate; roots rapidly under good light.