Tar sands, also known as oil sands or bituminous sands, consist of clay, sand, water and a form of petroleum known as bitreum. Wheatgrass is one plant which will grow in tar sands.

Tar sands, also known as oil sands, are primarily produced in Canada, with the largest reserves located in the province of Alberta. Other countries, such as Venezuela and the United States, also have smaller deposits of tar sands.

Frederick W. Camp has written:

'The Tar sands of Alberta' -- subject(s): Oil sands

'The tar sands of Alberta, Canada'

Tar sands or oil sands are consist of clay, sand, water, and bitumen. Its bitumen content is extracted and separated to purify it into oil.

There are larger known US supplies of tar sands than petroleum.