Echinodorus ‘Red Diamond’ is a striking ornamental sword plant prized for its compact rosette growth and vibrant red foliage. New leaves can develop beautiful shades of ruby red, burgundy, bronze, and reddish-brown, creating dramatic contrast against surrounding green plants. Its manageable size makes it an excellent choice for midground or feature placement in planted freshwater aquariums. Moderate to strong lighting, a nutrient-rich substrate, and balanced fertilization help encourage healthy growth and richer coloration. Supplemental CO₂ can promote faster, denser development but is not essential. With its bold colors and elegant form, ‘Red Diamond’ makes an impressive focal point in colorful freshwater aquascapes.