Alternanthera reineckii Red Alt

Alternanthera reineckii 'Red' is one of the most iconic and widely loved red stem plants in the freshwater aquarium hobby, native to South America and prized for its striking lance-shaped leaves in vivid shades of red, magenta, and deep crimson that bring a bold, warm splash of colour to any planted aquascape. Its rich colouration intensifies beautifully under high light and with consistent iron-rich fertilisation, creating a dramatic contrast against green carpets, mosses, and lighter-coloured plants. A classic choice for aquascapers of all levels looking to add depth, warmth, and visual impact to their scape.

Propagation: Take stem cuttings of 5–10cm, remove lower leaves, and replant into the substrate. Grows at a moderate pace; trim regularly to encourage bushy, dense growth.

Care Guide

• Origin: South America
• Light: Medium to High (high light intensifies red colouration)
• Water Parameters: pH 6.0–7.5 | Temp 22–28°C | Soft to moderately hard water
• CO2 Required: No (CO2 enhances colour and growth rate)
• Fertiliser: Regular liquid fertiliser with iron essential for red colouration
• Placement: Midground to Background
• Skill Level: Beginner to Intermediate
• Max Size: 20–40cm