Garlic Vine

Crush a leaf of Mansoa alliacea and the smell of garlic is unmistakable, which is the quickest way to identify it and the reason for the common name. In flower it is far more elegant than that suggests: clusters of trumpet flowers open deep purple and fade through lavender to near white, so a single flush carries three shades at once.
It climbs by tendril to five metres or more and flowers in two heavy flushes a year, making it a strong pergola and screen subject wherever frost is not a factor.
The Garlic Vine gives shaded structures a heavy twice-yearly flower display in a colour range few climbers match.