C. integrifolia is a small, tender, bushy, evergreen sub-shrub typically grown as an annual with oblong, veiny, dull-green leaves with hairy undersides and clusters of bright yellow, pouch-like flowers in summer. When established outdoors, it will, given mild winters, make a plant up to a metre high but when grown as an annual is more usually 40 to 50cm tall. It can be used as a bedding plant in formal schemes or dotted amongst perennials to fill in any spaces.