Scrophulariaceae. (Mexican Bell Vine) Fast growing climber with heart-shaped leaves and tubular, dark purple flowers over a long period in summer/autumn.
Grow under glass in a loam-based compost in full light with protection from hot sun. During growth water freely and apply a balanced liquid fertiliser monthly but keep just moist in winter. Pot on in spring. Can be grown outdoors in fertile, humus-rich, moist but well-drained soil in a frost-free area. In frost prone areas can be grown outdoors as an annual.
Ht. 3m. Mexico. *