Height: 30cm (1ft)
Planting distance: 7.5-10cm (3-4in)
Soil: ordinary, moist
Site: partial shade
Annual woodruff (Asperula orientalis, syn. A. azurea, A. setosa) is the only hardyin this genus of 200 species – all other woodruffs are treated as perennials .
Its pale blue flowers are strongly scented – unusual for– and appear in mid summer, 30cm (1ft) above the ground. Its narrow, green, lance-shaped are arranged in attractive whorls up the .
Un-like most, it tolerates partial shade andlikes moist soil. The flowers are good for .
Scatterover the flowering site in mid spring, and rake them gently into the soil. When the are strong enough to handle, thin to 7.5-10cm (3-4in) apart.
Pests and diseases: Trouble free.