Melon Sword (Echinodorus osiris) – Rosette Plant
The Melon Sword is a visually striking rosette plant with stemmed leaves that have slightly rippled edges. Mature leaves are green, while younger leaves display a reddish tint.
Native to Brazil, this plant thrives in hard water and can grow under weak lighting conditions. In strong light, it requires a nutrient-rich substrate and iron-rich fertilizer to prevent stunting. Water temperature should not fall below 75°F.
Optimal water conditions include a temperature range of 65°–82°F, alkalinity between 3–8 dKH, and a pH of 6.5–7.5. For lighting, use approximately 2 watts per gallon or more with full-spectrum bulbs (5000–7000K).
| Water Parameters | Range |
|---|---|
| Temperature | 65°–82°F |
| Alkalinity | 3–8 dKH |
| pH | 6.5–7.5 |
| Lighting | 2 watts per gallon or more (5000–7000K) |
FAQ
What is the lighting requirement for Melon Sword in strong light?
In strong light, a nutrient-rich substrate and iron-rich fertilizer are required to prevent stunting.
Can Melon Sword grow in weak lighting?
Yes, it can tolerate weak lighting and hard water conditions.
What is the ideal water temperature for Melon Sword?
The ideal temperature range is 65°–82°F, with a minimum of 75°F to avoid stunting.
Rebecca MacLeod –
The Melon Sword adds a nice contrast with its reddish young leaves and green mature ones. It grew well in my 20-gallon tank with moderate lighting and no special fertilizers. I appreciate the plant’s hardiness and low maintenance.
Kevin Davidson –
It looks great in my aquarium. I used a 2-watt per gallon light and added iron-rich fertilizer when the light was strong. The plant spread nicely over a few months.
David Ince –
Easy to grow and very attractive. I kept it in a tank with weak lighting and it thrived. The color change from red to green is subtle but noticeable.