Gentiana Plant. Gentians (plants of the genus gentiana) bear attractive flowers, usually blue but occasionally yellow, white, red, or purple; To sow annual gentiana from seed, perform the sowing at the beginning of spring, in march or april, and it will bloom from june to september.

When in bloom the flowers of gentiana plants are clustered and may be blue, purple, pink, white or yellow. Several species belong to the. Of these 354 are accepted species names.