According to J.Eschman the best trumpet gentian to grow, very adaptable. Extra large, intense velvet-blue, upward facing trumpets. The main blooming season is spring but they can re-bloom throughout summer and fall. The leathery foliage is evergreen. For any good garden soil, needs light shade in hotter regions. 3 1/2" pots - about 1 1/2 to 2 times larger plants than our regular size. In years, 3 years old instead of 2.