Densely branched, erect herb to about 30 cm tall, often grown as an annual. Leaves ovate, to about 4 cm long, hairy, glossy green. Flower clusters open, terminal. Flowers mostly pink, the concave window in the throat yellow, blotched with maroon; spring to summer.
A popular annual bedding plant available as a range of cultivars. Hybrid cultivars granted PBR include 'Apricot Cherub', 'Coral Belle', 'Jacqueline Joy', 'Joyce's Choice', 'Lady Valerie', 'Lilac Belle', 'Lilac Mist' and 'Salmon Supreme'.
D. rigescens Hilliard & amp;Burtt is a taller perennial plant to 0.5 m or so tall with coppery pink flowers in tall spikes, and D. vigilis Hilliard & amp;Burtt is a stoloniferous, late-flowering perennial to 0.5 m tall with pale pink flowers.
Source: (2002). Scrophulariaceae. In: . Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.