How to grow Gentiana Gentiana (jen-te-a-na) Named after Gentius, King of Illyria who first used the plant medicinally (Gentianaceae). Gentian. A large genus of hardy perennials. Most of those in cultivation are dwarf plants suitable for the rock garden, but a few are more at home in the border. Some of them are lime-haters. Species cultivated G. acaulis (now considered […]