Here cultivation and early planting result in low indications of vegetation. Brown areas in the northern Mississippi Basin are indicative of bare soil as corn and soybean fields are prepared for planting. The peak of green occurs in the southeastern coastal region in June. It is still possible to discern the Cornbelt. The peak of green for grasslands of the Northern Great Plains is reached in July.
Water lowers the vegetation index so dramatically that lush marsh vegetation is muted.
Standing water in the Everglades and other marshes make the southern tip of Florida appear to have little vegetation. In August, high mountain forests of the southwest flourish. Snow cover is minimal and grasses and shrubs are lush. The Cornbelt is at the peak of green. In September, some agricultural crops of the Cornbelt are harvested, leaving large areas with lower indications of vegetation.