Plant atlas

Geographical Origin and Habitat: This exceptional dwarf cultivar, named 'Tropica', was originally selected and propagated by the Danish company Tropica in the 1980s. It is a stable mutation derived from Echinodorus parviflorus, a species native to South America (Amazon basin). It does not exist in the wild. In its habitats of origin, the parent species grows in shaded areas along riverbanks. The 'Tropica' selection was isolated and stabilized to maintain an extremely small size and curled leaves, perfect for small to medium aquariums.

Taxonomy & Genetics: It belongs to the family Alismataceae and is a cultivated variety of Echinodorus parviflorus. The genetic mutation determining its dwarf size and characteristic leaf curvature is stable. It is considered one of the smallest and most peculiar Amazon swords. To preserve its genetic characteristics and prevent regression, it is reproduced vegetatively by division or micropropagation in vitro.

Physical Structure: It develops an extraordinarily compact and low rosette, which in the aquarium reaches a maximum height of only 10-15 cm, rarely 20 cm if light is moderate. The leaves are arranged in a very dense rosette, with extremely short petioles. Submerged leaf blades are broad, lanceolate-oval, and display an arched and curled habit. The root system is dense and fibrous, providing a solid anchor in the substrate.

Color & Texture: Submerged leaves display a very characteristic deep and intense dark green coloration. Young leaves emerging from the center can have light brown or bronze tones before turning dark green. To the touch, the leaves are leathery, rough, and robust. The texture features marked longitudinal veins and a slightly hammered or wavy leaf surface, giving it a unique wrinkled and three-dimensional appearance.

Lighting & CO2: Requires moderate to intense lighting. Although it can tolerate moderate light, intense lighting promotes the maintenance of its dwarf and compact habit, preventing petiole elongation. CO2 injection is recommended to support the healthy development of the rosette and to stimulate the growth of new dense leaves from the center.

Nutrition & Substrate: Like all plants of the genus, it is a heavy root feeder. Requires a fine and fertile substrate, rich in nutrients and iron. It is recommended to regularly insert fertilizer tabs into the substrate directly under the plant. Poor root nutrition is immediately noticed with pale new leaves and stunted growth.

Water Chemistry: Adapts to a wide range of water parameters, with ideal temperatures between 15°C and 30°C. The ideal pH is between 5.5 and 7.5, with water hardness (KH) from soft to medium. Benefits from regular water changes to keep the environment clean and prevent harmful organic accumulation.

Space Management & Placement: Its perfect placement is in the foreground of the aquarium or the midground in small tanks. Thanks to its dwarf size and compact habit, it is ideal for nano aquariums. It should be positioned in well-lit spots, avoiding taller plants creating shadow cones that would cause it to stretch.

Pruning: Pruning is simple and consists of removing the oldest or yellowed outer leaves by cutting them near the rhizome with sharp scissors. This operation stimulates the production of new compact leaves from the center and prevents the accumulation of organic debris at the base of the clump.

Risks & Diseases: It is prone to iron chlorosis in case of iron deficiency, visible as pale or transparent new leaves. Due to its slow growth and thick leaves, it can be colonized by green spot algae or black brush algae if the nutrient balance is incorrect or if there are CO2 fluctuations.