Nesaea pedicellata

Nesaea pedicellata originates from the warm, slow-moving rivers, lake margins, and swamps of tropical Africa, where it grows in partially emersed or submerged conditions in clear to slightly tannin-stained waters. The species is classified within the family Lythraceae and is closely related to Rotala and Didiplis, sharing their capacity for brilliant colouration under intense light and CO2 enrichment. Submerged, the leaves are opposite, lanceolate, and transform from green at low light to golden-yellow, orange, and deep red at the tips under optimal conditions, creating a dramatic gradient of warm tones along each stem. This colour performance makes it highly desirable in competitive aquascaping circles, where it is frequently used to create focal-point colour zones in the Iwagumi and Dutch styles. Nesaea pedicellata is a demanding plant that requires soft, slightly acidic water, high-intensity lighting, and consistent CO2 injection to maintain its colour. In harder or more alkaline water, or under suboptimal lighting, the plant defaults to unremarkable green growth and may deteriorate. It is best kept by experienced planted-tank aquarists.

Placement Use in the midground or background of high-tech aquariums. Plant in groups of 5–8 stems spaced 2–3 cm apart. The vivid colour creates a strong focal point when clustered.

Lighting High-intensity lighting (70–110 PAR) is necessary to achieve orange and red colouration. Under moderate light, the plant stays green. LED fixtures with strong red-spectrum output are particularly effective.

CO2 & Fertilisation CO2 injection at 25–35 ppm is essential. Comprehensive EI or similar dosing with elevated iron (0.2–0.5 ppm) and potassium unlocks full colour potential. Avoid deficiencies, which cause rapid deterioration.

Propagation Trim tops at 6–8 cm and replant in substrate. Side shoots develop after trimming. Rooting takes 10–14 days in warm, soft water. Avoid transplanting during deficiency episodes.

Trimming Trim every 2–3 weeks. The most colourful portions are the upper stem tips — preserve and replant these as priority. Remove bare lower stems. Maintain consistent conditions during and after trimming to prevent stress-related leaf loss.