Asperula annual woodruff

Height 30cm (1ft)

Planting distance 7.5-10cm (3-4in)

Flowers in mid summer

Ordinary moist soil

Partial shade

Hardy annual

Annual woodruff (Asperula orientalis) is the only hardy annual in this genus of 200 species – all other woodruffs are perennials. Its strongly scented pale blue flowers appear in mid summer on top of 30cm (1ft) tall stems clothed with narrow green lance-shaped leaves. These are arranged in attractive whorls up the stems. It is useful for garden decoration as, unlike most annuals, it tolerates partial shade and likes moist soil. With its compact habit, it is also suitable for rock gardens. The flowers are also good for cutting.


Scatter seeds over the flowering site in mid spring, and rake them gently into the soil. When the seedlings are strong enough to handle, thin them to 7.5-10cm (3-4in) apart.

Pests and diseases

Trouble free.

21. February 2012 by Dave Pinkney
Categories: Annuals, Biennials, Featured Articles, Plants & Trees | Tags: , , , , | Comments Off on Asperula annual woodruff


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