Achetaria azurea is an evergreen subshrub in the plantain family (Plantaginaceae) native to southeastern Brazil, grown for its clear, true-blue tubular flowers that appear from late summer through autumn — a colour genuinely difficult to find in any hardy or tender plant. Outdoors in zones 9 to 11 it can reach 3 to 4 feet; in containers in cooler climates it grows more compactly at 1 to 2 feet, making it a manageable subject for the conservatory or summer terrace.

It needs well-drained, slightly acidic soil and a warm, sunny position to perform its best. In tropical and subtropical climates it blooms over an extended season, and the flowers attract attention disproportionate to the plant's modest size. For gardeners who grow tender plants in containers and are looking for something that contributes genuine blue rather than blue-purple or blue-lavender, Brazilian Snapdragon is worth locating and worth the effort of overwintering.