Orchid Lily

Young plants look like a Cryptocoryne, mature ones like a small water lily that never sends leaves to the surface. Barclaya longifolia is a Southeast Asian rosette plant with wavy, elongated leaves in green or reddish tones from a central rhizome. Despite being technically a water lily (Nymphaeaceae), it stays fully submerged throughout its life. Flowgrow records a red and a green variety of the one species — the green is the larger of the two and the one with a reddish leaf underside — so plants sold as a separate 'red' form are this same plant, not a distinct cultivar.

Growth is steady rather than fast, and the plant stays manageable when the roots are confined. A pot or restricted root space holds it at a moderate size for months. Given open root space and a nutrient-rich substrate, it pushes to 30 or 40 cm and needs room — a 100-litre tank or larger is the practical minimum.

It does best at 24 to 28 °C in soft, slightly acidic water around pH 5.5 to 7.5. CO₂ injection produces denser growth and better colour but is not essential. The leaves are delicate and attract snails; even a moderate population leaves visible holes.

It rests periodically: the leaves die back and the rhizome sits bare for several weeks before sprouting again. This is normal and not a sign of poor health. Reliable flowering is a sign of good conditions — translucent white flowers form at the surface and self-pollinate. The seeds can be collected and sown in sand to start new plants.