🌡️ 15–28°C — widest range in catalog. Only catalog plant active below 20°C. AC rooms, cool seasons, hill stations: Lobelia keeps growing.
✔ No CO2. Any substrate. pH 6–8. Beginner. Stem cutting propagation: trim top, replant. 1 portion → 10+ stems over 3–4 trims.
🌱 Three Keys
Mid-ground rounded leaves: Distinct texture between Pearl Weed (tiny) and Hygrophila (large). Use all three for a three-layer stem plant depth effect.
Slower growth = less trimming: Trim every 4–6 weeks vs Hygrophila's 2–3 weeks. Better for hobbyists who want a planted tank without heavy maintenance.
No-CO2 Betta tank: Frogbit + Lobelia + Pearl Weed + Hygrophila + Anubias = complete 5-plant no-CO2 Betta setup from this catalog.
Emersed form: Above water, Lobelia cardinalis produces crimson-red flowers. Submerged in aquarium: compact green stems, no flowers. Both forms are the same plant — different expressions.
