Cryptocoryne cordata var. siamensis 'Rosanervig'
Cryptocoryne cordata var. siamensis 'Rosanervig'
Save this plant or add it directly to one of your aquariums.
Need help with Cryptocoryne cordata var. siamensis 'Rosanervig'?
Explore compatibility, care or problems using this guide and your aquarium’s conditions.
Planting & care
- PlacementMidground, Background
- Growth typeRosette plant
- LightLow
- CO2Recommended
About this plant
Cryptocoryne cordata var. siamensis 'Rosanervig' is a slow-growing water trumpet distinguished by rose-pink veins against green to olive leaves. The long horticultural name remains useful in the aquarium trade, although current botanical treatments accept the parent taxon as Cryptocoryne siamensis. This cultivar is easy once established and can be placed in the midground or background as a coloured specimen. Low to medium light is sufficient; injected carbon dioxide is optional but can improve growth. A nutrient-rich substrate is more important because Cryptocoryne feed strongly through their roots. Stable conditions reduce the risk of temporary leaf loss after planting or major water changes. The profile's broad range of pH 4.5 to 7 and carbonate hardness from 2 to 12 °dKH reflects the adaptable parent group. Propagation occurs through runners, rhizome division and separated daughter rosettes. Avoid confusing this plant with Alternanthera reineckii 'Rosanervig', which is an unrelated red stem plant.
Quick specs
- Difficulty
- Beginner
- Light
- Low
- CO₂
- Recommended
- Temperature
- 73–82°F (23–28°C)
- Placement
- Midground, Background
- Growth type
- Rosette plant
- Aquarium suitability
- Suitable for aquariums Suitable for long-term aquarium use.
Water conditions
Plant reference ranges, not dosing instructions or measurements from your aquarium. Consider livestock needs and measured conditions.
- Temperature
- 73–82°F (23–28°C)
- pH
- 4.5–7
- Carbonate hardness
- 2–12 °dKH
- CO₂ (mg/L)
- 10–40 mg/L
Growth & placement
- Growth rate
- Slow
- Propagation
- runners, rhizome division and daughter plants
- Color
- Green
Grow it successfully
What you’ll need to grow Cryptocoryne cordata var. siamensis 'Rosanervig'
Start with this plant’s documented care needs, then use an AquariumLesson calculator to size the setup for your aquarium.
CO₂
This plant’s care profile lists CO₂ injection as recommended, not required.
Estimate dissolved CO₂Substrate
A suitable substrate or targeted root nutrition can support this plant's growth habit.
Calculate how much substrate you needTaxonomy
- Major group
- Angiosperms
- Family
- Araceae
- Genus
- Cryptocoryne
- Botanical name
- Cryptocoryne cordata var. siamensis 'Rosanervig'
