Sweet Vernalgrass Invasive Plant Information


Sweet Vernalgrass has been reported in the following 42 states:

Alaska, Colorado, Connecticut, District Of Columbia, Georgia, Idaho, Illinois, Indiana, Kentucky, Maryland, Minnesota, Mississippi, New Hampshire, New Mexico, North Carolina, Oklahoma, Pennsylvania, South Carolina, Vermont, Wisconsin, Oregon, West Virginia, Alabama, Arkansas, California, Delaware, Florida, Hawaii, Iowa, Louisiana, Maine, Massachusetts, Michigan, Missouri, New Jersey, New York, Ohio, Rhode Island, Tennessee, Texas, Virginia, Washington


Images of Sweet Vernalgrass:



Information about Sweet Vernalgrass:


The following information is licensed as Creative Commons content from Wikipedia and the USDA.
More information about Sweet Vernalgrass may be found here, or from the US Department of Agriculture.

It avoids very dry or waterlogged soil.Anthoxanthum odoratum, also known as sweet vernal grass, holy grass, vanilla grass, or buffalo grass, is a short-lived perennial grass found wild in acidic grassland 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 'odorous'.

This grass grows in tufts. It can grow up to 100 cm (39 in) tall.
The stems are 25-40 cm (9.8-15.7 in) tall, with short but broad green leaves 3-5 mm (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 mm (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 5 mm (0.20 in), blunt, with hairy fringes around the side.
The scent is particularly strong when dried, and is due to coumarin, a glycoside, and benzoic acid - it smells like fresh hay with a hint of vanilla. The seed head is bright yellow in color.
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.


Other links with information about Sweet Vernalgrass:


Reported Urban
Infected Regions:

Ketchikan, AK
Sitka, AK