Crinum Thaianum is a unique aquarium bulb plant that belongs to the lily family but closely resembles something else we all know. Its bulb looks like an onion—earning its common trade name, Thai Onion or Water Onion. When mature, this aquatic plant develops long, ribbon-like leaves that can grow very large if allowed. Due to its potential size, it’s a great option for anyone with a large planted tank or sizable pond where it can fully flourish!
Important Note:This listing may or may not include a fully mature plant. Please ensure you are prepared to care for bulb plants at all growing stages.
Aside from space requirements, Crinum Thaianum is an easy aquarium plant to grow and keep. It’s undemanding, and the reward outweighs the risk in this case. Established, mature plants will occasionally bloom fragrant lilies that rise to the water’s surface and last for some time. A great live plant for enthusiasts who enjoy keeping aquariums or similar setups long-term.
| Common Name | Thai Onion / Water Onion |
| Care | Easy |
| Lighting | Low to Medium |
| CO2 | Optional |
| Suggested Placement | Background |
| Growth Rate | Moderate to Fast |
| Height | 8-20+” |
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