As the trees begin to dry I quickly begin the field, starting at the base of the trees with a thinner mix of yellow ocher and burnt sienna. That's right, I want a bloom. Watercolor grows grass better than any media I know. I continue toward the bottom of the paper, adding pure burnt sienna and dropping in a mix of burnt sienna and cobalt to make the rows stand up, then accents of even darker burnt sienna and french ultramarine blue.