Perennial of the Plantaginaceae family, Veronica prostrata is a species from Central and Southern Europe, steppes and dry grasslands, rocky slopes and sunny edges, from the Iberian Peninsula to Central Asia. The 'Nana' cultivar is a compact form selected in cultivation, with an even more reduced habit than the type.
It forms prostrate to slightly spreading clumps, 5 to 10 cm in height, with stems that elongate by leaning against rocks or carpeting the ground. The leaves are small, oval to oblong, slightly pubescent, medium to dark green, with finely toothed edges.
The flowers are a true blue-violet to intense blue, gathered in short and dense spikes that emerge above the foliage. The hue, particularly strong in this cultivar, is one of the purest blues that can be found among rock garden veronicas.
In its natural habitat, the flowering of the species type extends from May to July. In cultivation, 'Nana' generally blooms in May-June.
It requires full sun and well-drained soil, poor to moderately fertile, preferably calcareous. Hardy and undemanding once established, it is perfectly suited to rock gardens, walls, and sunny borders, where its compactness makes it more manageable than the type.