A fleshy herbaceous plant with upright or spreading stems growing 20-60 cm tall. Its broad paired leaves are bluish, greyish or lavender in colour with pinkish or brownish margins. Tiny plantlets are produced along the toothed margins of these leaves. Its drooping bell-shaped flowers are borne in dense clusters at the top of its branched stems. These flowers (17-20 mm long) are usually red, reddish-orange or purplish in colour.