A Summer Border Collection typically refers to a curated selection of flowers that are designed to create a vibrant, colorful, and cohesive garden display throughout the summer months. These collections often include a variety of perennial, biennial, and annual plants, chosen for their ability to bloom during the summer season, and for their complementary colors, heights, and textures. The idea is to create a beautiful, low-maintenance garden that offers color and interest from late spring through fall.