
Rosettes, Bulbs, and Ground Cover Plants
Cardinal Flower
Lobelia cardinalis
Photo: Barnes, Dr. Thomas G. · Public domain · Wikimedia Commons
Key facts
- Temperature18–26 °C
- pH6–7.5
- Adult size20 cm
- Difficulty★★☆☆☆
- WaterFresh
Full profile
- Family
- Campanulaceae
- Origin
- North America
- Size
- 5–20 cm (submerged)
- Temperature
- 18 – 26°C
- pH
- 6.0 – 7.5
- GH
- 2 – 15 °dGH
- Difficulty
- ★★☆☆☆
- Light
- medium – high
- CO2
- recommended
- Fertilization
- medium
- Growth
- slow
- Position
- foreground – midground
- Propagation
- cuttings
Notes: Green leaves with reddish undersides. Out of water, it produces red flowers; the “Mini” variety is ideal for the foreground.





