River buttercup

River buttercup (Ranunculus inundatus) is a perennial aquatic or semi-aquatic plant species belonging to the Ranunculaceae family. It is distinct for its adaptation to inundated conditions, thriving in environments where other terrestrial buttercups would struggle to survive due to excessive soil moisture.

The species is native to Australia, predominantly found in riparian zones and floodplains. Its distribution is linked to the seasonal availability of water, which has driven the plant to develop a vigorous creeping rhizome system that allows it to survive periodic droughts and submergence.

Botanically, the plant is recognized by its deeply dissected, palmate leaves that grow on slender stalks. The foliage architecture creates a dense, carpet-like appearance, which is highly sought after by enthusiasts of planted tanks and specialized botanical gardens.

Cultivation requirements involve providing stable light conditions and a nutrient-rich substrate. While it is hardy, the plant responds best to supplemental CO2 injection and precise micro-nutrient dosing, which prevents leaf chlorosis and ensures the vibrant green coloration characteristic of healthy specimens.

The primary agricultural and horticultural use of this plant is in the aquatic trade. It serves as a foreground plant in high-tech aquascapes, where it is valued for its unique texture and ability to spread rapidly across the substrate, providing an organic and lush aesthetic to the layout.

• Light requirements: High/Intense
• Propagation: Rhizome division
• Substrate: Nutrient-rich, fine grain
• CO2 supplementation: Recommended