The leaves of lowbush blueberry are lanceolate or narrowly elliptical, measuring around 1-3 inches (2.5-7.6 cm) in length and about 0.3-1 inch (0.8-2.5 cm) in width. They exhibit a reddish-green hue in spring, transitioning to a dark blue-green in summer, and finally, a maroon-purple in fall. The leaves have a lighter, glaucous underside and a slightly serrated margin. The texture is porous, with a strong midrib and a pattern of fine veins branching out toward the edges.

The small flowers of lowbush blueberry are primarily white with a delicate pink tinge, which enhances their subtle elegance. Each flower measures approximately 0.2-0.3 inches (5-8 mm) in diameter. The petals are fused into a bell shape, forming a gentle curve outward. These blossoms typically cluster together, creating a visually appealing display. They emit a faint, sweet fragrance that attracts various pollinators. Blooming occurs from late spring to early summer, marking a vibrant period for the plant.

The stem of lowbush blueberry is characterized by its multi-stemmed and twiggy branches. These branches have a tendency to turn red during the winter months, offering a distinctive seasonal identifier. Stems are typically slender and can exhibit a fine texture, branching densely to form an intricate network. The stems usually measure around 0.2-0.4 inches (0.5-1 cm) in diameter. This branching pattern creates a bushy appearance, making it a key feature for identification.

The fruit of lowbush blueberry is a small, spherical berry approximately 0.2 to 0.6 inches (5 to 15 mm) in diameter. On ripening, these berries showcase a vibrant blue to purple color with a fine whitish bloom, giving them a slightly frosted appearance. They possess a smooth, glossy skin and contain numerous tiny seeds. Characteristically, they offer a juicy and mildly sweet flavor with hints of tartness. These berries typically grow in clusters, which makes them a delightful sight and accessible for foraging during the summer months.