Banana plant

Nymphoides aquatica

Also known as Banana plant, banana lily, banana floatingheart, big floatingheart, Nymphoides lacunosa

FreshwaterBulb / tuberPlantletsRunners

Care at a glance

Light
Medium light
CO2
No CO₂ needed
Growth rate
Slow
Placement
Foreground
Type
Bulb / tuber
Temperature
68–82°F (20–28°C)
pH
6.0–7.5
Hardness
4–12 dGH
Max height
5.9 in (15 cm)
Spread
5.9 in (15 cm)
Nutrient uptake
Root + water column
Growth region
Submersed or emersed
Difficulty
Easy
Origin
Southeastern United States (Texas to Maryland, especially Florida)
Family
Menyanthaceae

Overview

Rest the cluster of banana tubers on top of the substrate or bury only the bottom third, since burying them fully causes them to rot. New roots emerge from the stem and anchor the plant on their own, so there is no need to push the tubers down. It is undemanding, tolerating low to high light with no CO2 needed, though brighter light speeds growth. Under strong light it will send long stalks up to the surface and form floating lily pads, which some aquarists trim back to keep it compact as a foreground or midground specimen.

In the wild

Native to the southeastern United States from Texas up to Maryland, and especially common in Florida, where it grows in calm, slow-moving rivers, lakes and ponds. It is named for the cluster of thick, banana-shaped storage tubers that sit at the base of the plant near the substrate.

Good to know

It is a member of the bogbean family Menyanthaceae, not the true water lilies, and is also called big floatingheart. In the wild it eventually sends up rounded floating pads on long stalks and produces small white five-petalled flowers at the surface. The banana-shaped structures are nutrient-storage tubers, while the actual feeding roots are thin and grow from the stem base.

Did you know

Did you know the banana-shaped 'roots' are not roots at all but swollen storage tubers, and if you bury them in the substrate they simply rot away.

Appears in

No-CO2 plants · Foreground plants · Bulb plants · Beginner plants

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