Plant Profile
Native to the lush marshlands and limestone streams of Southeast Asia, Crypt Blassii is known for large, oval-shaped leaves with deep olive-green tops and rich purple-red undersides, the kind of bold tropical flair that instantly upgrades an aquatic garden. As with all crypts, it can be sensitive to changes in water parameters and doesn't like to be moved. But once its roots settle into your substrate, it becomes a robust, eye-catching midground anchor worth the setup effort.
Key Features & Benefits
- Broad oval foliage features striking olive-green topside coloration paired with rich purple-red undersides.
- Originates from mineral-rich marshlands, offering exceptional structural hardiness once established in the substrate.
- Lush rosette growth forms a grand midground centerpiece that creates excellent natural shelter for shy fish.
Care & Planting Instructions
- Prep the plant by removing it from the pot and clearing all rockwool from the roots.
- Use fine-tip pinsettes to push roots deep into quality aquarium soil, as Crypt species are heavy root feeders.
- Insert root tab fertilizers if using an inert substrate like sand or gravel.
- Inject pressurized CO2 for faster growth, though not required for long-term health.
- Choose a permanent spot from day one; moving an established plant will likely trigger leaf loss.
- Crypt species can be grown emersed in high-humidity setups or submerged in aquariums. Propagate by splitting the rhizome or replanting new growth shoots.
- Don't discard the plant if leaves dissolve early on; see our guide to managing Cryptocoryne melt to help your plant recover smoothly.
Quick Facts
Listed information should be treated as general guidelines only. Team Buce Plant encourages you to do thorough research to ensure healthy growth!
| Attribute |
Specification |
| Scientific Name |
Cryptocoryne cordata var. blassii |
| Common Name(s) |
Crypt Blassii, Water Trumpet |
| Family |
Araceae |
| Plant Type |
Rosette / Root Feeder |
| Height / Size |
5-10" |
| Care Difficulty |
Medium |
| Light Requirement |
Moderate |
| CO2 Requirement |
Optional (Recommended for optimal growth) |
| Placement / Usage |
Midground Accent |
| Growth Rate |
Slow |
| Water Parameters |
pH 5.5–8.0 | Temperature 72°F–82°F (22°C–28°C) |
| Propagation Method |
Rhizome Division / Offshoot Runners |
| Origin |
Southeast Asia (Thailand, Malaysia, Borneo) |
Frequently Asked Questions
1. Why are my Cryptocoryne Blassii leaves melting away?
Transplanting Crypts into new water parameters often triggers a temporary reaction where old leaves dissolve. As long as the root system remains undisturbed in healthy soil, fresh foliage will sprout shortly. Check out our guide on Cryptocoryne melt for step-by-step recovery tips.
2. Can I move my Cryptocoryne to a new spot in the tank later?
It is best to leave your Cryptocoryne permanently in its original spot. Uprooting an established plant damages its fine root hairs and almost always causes another cycle of leaf melt.
3. Do I need root tabs if I already use liquid fertilizers for my Cryptocoryne?
Yes. Because Cryptocoryne plants absorb the vast majority of their nutrients through their roots rather than their leaves, providing nutrient-rich aquasoil or root tabs inside sand or gravel is far more effective than relying on water column liquid fertilizers alone.
