View of a hilly summer landscape.

Summer in the Danish hilly landscape—rolling terrain covered in the lush greens of the growing season, open sky with cumulus clouds—provided a subject of warmth and vitality after the extended winter paintings that occupied much of Agersnap's recorded output. A hilly summer landscape shows the same terrain he painted in snow now transformed by season: fields green rather than white, trees in full leaf, the sky animated by summer cloud formations. The painting demonstrates his commitment to documenting the Danish landscape across the full seasonal cycle, the same hills and valleys rendered in fundamentally different seasonal character.

Summer foliage requires Agersnap to manage a rich range of greens—the yellow-greens of new growth, the deeper greens of mature foliage, the blue-greens of distant trees—against the warm yellows and ochres of summer fields. Cloud formations in the sky add compositional dynamism and shadow patterns on the terrain.