Gratiola Viscidula is an aquatic plant that is still relatively new to the planted aquarium hobby. Hailing from North America, Gratiola Viscidula is known for its thorn-like leaves with a bright green hue. Gratiola Viscidula is an easy aquarium plant and doesn’t require too much in order to thrive. Clean water and quality aquarium lighting are a good start. Slowgrowing, this aquatic plant is ideal for a midground choice. Alternatively, it can be used for a foreground aquatic plant choice if it is kept trimmed low enough.