When I moved to Colorado, I was amazed at the shear number of different kinds of grasses. After all, Denver is only just outside the prairie. Here is an example of one of the most common kinds of grasses in my neighborhood alley. This is Cheat Grass (Bromus tectorum) and it is an invasive grass that is now one of the most common grasses throughout the state. This is a small watercolor painting of the flowering head early in the spring.