Height up to 60 cm. This herbaceous perennial carries spikes (racemes), of blue to lavender coloured flowers. Unlike many other species of lupine, the stems lack basal leaves. The alternate palmate leaves are divided into 6-9 leaflets, with the upper surface hairless and the underside bearing minute hairs. Seeds are produced in up to 5cm long pea-pod like structures which become blackened and hairy as they age. When fully mature, the pods split open explosively.