What are the physical features of the interior plains region?

The Interior Plains region of Canada was once covered with many different kinds of grasses. The vegetation today includes grasses with long roots like bluestems, June grass and porcupine grass as well as pine, spruce and fir trees. This vegetation grows here because lots of farmers grow oat, barley, wheat and more plants. The farmers want to live there because there is a lot of area for their big farms. They also like it because there is the perfect amount of water and sunlight for them.