Hyptis lorentziana

Geographical Origin and Habitat: Hyptis lorentziana is native to South America, specifically southern Brazil, Uruguay, and northern Argentina. It grows primarily in marshy environments, riverbanks, wetlands, and areas subject to periodic flooding, developing both emersed and submerged forms according to the season.

Taxonomy & Genetics: It belongs to the Lamiaceae family (the mint family) and is one of the few species in this genus to have successfully adapted to submerged life in aquariums. A notable genetic feature is the presence of aromatic glands on the leaves, which release a strong scent resembling mint or oregano when crushed.

Physical Structure: It is a robust stem plant, woody at the base, with erect square-section stems that can grow rapidly to over 50 cm in height. The leaves are arranged oppositely along the stem, are lanceolate-ovate, and display strongly serrated margins and a slightly leathery texture that makes them resistant to herbivorous fish.

Color & Texture: Under intense lighting, the plant develops an extraordinary coloration ranging from purple-red to deep violet, whereas in moderate light, it takes on olive green or coppery hues. The leaf texture is thick and rugose, providing the aquascape with excellent structural and color contrast when placed near fine-leaved green plants.

Lighting & CO2: Requires intense lighting (at least 0.7-1 watt per liter) to fully develop its purple color. CO2 injection is highly recommended to support rapid growth and prevent the internodes from becoming too distant.

Nutrition & Substrate: It is a demanding plant that benefits from both a fertile substrate rich in iron and regular liquid fertilization in the

Water Chemistry: Adapts to a wide range of water values, but prefers soft to moderately hard water with a pH between 6.0 and 7.5. The optimal temperature is between 18 and 30 °C; it tolerates thermal variations well if they are gradual.

Space Management & Placement: Due to its size and vibrant color, it is ideal as a background plant or for the midground of large aquariums as a focal point. It should be planted in small, spaced groups to prevent the lower leaves from shading each other.

Pruning: Grows very fast and requires frequent trimming. Prune by cutting the stems to the desired height; the cut tops can be replanted directly to generate new plants, while the remaining stem will quickly produce lateral branches.

Risks & Diseases: Under insufficient light, the plant tends to drop its lower leaves and fade, turning a dull green color. The leaves can collect black brush algae or filamentous algae if the tank's nutrients are not balanced correctly.