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Anthoxanthum odoratum, known as sweet vernal grass, holy grass, vanilla grass or buffalo grass, is a short-lived grass found wild in acidic grasslands in Eurasia. It is also grown as a lawn grass and a house plant, due to its sweet scent, and can also be found on unimproved pastures and meadows. Odoratum is Latin for "smell as well".
It does not grow well in very dry or waterlogged soil.
This grass grows in tufts. It can grow up to 100 cm.
The stems are 25–40 centimetres (9.8–16 in) tall, with short but broad green leaves 3–5 millimetres (0.12–0.20 in) wide, which are slightly hairy. It flowers from April until June, i.e. quite early in the season, with flower spikes of 4–6 centimetres (1.6–2.4 in) long and crowded spikelets of 6–10 millimetres (0.24–0.39 in), oblong shaped, which can be quite dark when young. The lower lemmas have projecting awns.
The ligules are quite long, up to 5mm, blunt, with hairy fringes around the side.
It is grown by scattering seed on tilled ground in the spring through fall, germinating in 4 to 5 days. It prefers sandy loam and acidic conditions (a low pH).
As an agricultural grass it has a low yield, but can grow on land too acidic for other grasses.
- BSBI Description retrieved 10 December 2010.