Lespedeza, often called bushclover, is a genus of flowering plants in the legume family recognized for its delicate, cascading clusters of pea flowers. Identifying this plant correctly requires attention to specific botanical features, including its compound leaves, distinct flower structure, and characteristic growth habit. Understanding what lespedeza looks like involves examining these elements across different species and growing stages.
Overall Growth Habit and Structure
Most lespedeza species are deciduous perennial shrubs, though some varieties function as annuals or semi-woody perennials. They typically form a rounded, somewhat spreading mound with multiple stems emerging from a central crown. The overall size varies significantly by species, ranging from compact, low-growing varieties under two feet tall to taller shrubs reaching four to five feet in height. The stems are generally slender, slightly woody at the base, and may appear somewhat wiry, especially in mature plants. The plant's architecture creates an open, airy appearance rather than a dense, solid mass.
Leaf Characteristics and Arrangement
The leaves are a key feature for identification and are arranged alternately along the stems. Each leaf is compound, meaning it is divided into several smaller leaflets, typically three per leaf, resembling a clover or trefoil pattern. These leaflets are generally small, elliptical to oblong in shape, with smooth edges. The texture is usually fine and soft to the touch, and the color ranges from a fresh, bright green in spring and summer to vibrant yellows and oranges in the autumn frost. The leaf stems are notably slender, adding to the plant's delicate visual profile.
Flower Structure and Coloration
The most visually striking aspect of lespedeza is its flowering display, which typically occurs in late summer and continues into early fall. The flowers are pea-shaped, a characteristic common to legumes, and grow in loose, open clusters called racemes along the stem tips. These clusters hang gracefully, creating a fountain-like effect. The standard flower colors span a wide palette, including vibrant purples, various shades of pink, and pure whites. Some species and cultivars may exhibit subtle variations or bi-colored patterns, often with a slightly darker throat contrasting the paler petal tips.
Distinguishing Features from Similar Plants
While the general description fits many lespedeza species, specific details help differentiate them from look-alikes such as indigo or false indigo. Unlike some larger, more rigid indigo plants, lespedeza stems are noticeably more flexible and less upright. The flower clusters are also more open and airy compared to the denser, spike-like formations found on true indigo. Furthermore, the individual leaflets tend to be smaller and more numerous, contributing to a finer-textured foliage appearance that is less coarse.
Observing the seed pods provides another method of confirmation following the flowering period. The pods are small, slender, and distinctly flattened, often forming a tight spiral as they mature. They are typically brown or gray in color and split open along one seam when ripe, releasing the small, hard seeds within. This pod structure is a definitive characteristic of the legume family and helps solidify identification when flowers are no longer present.
Seasonal Changes and Landscape Presence
Lespedeza offers multi-season interest in the landscape, changing its appearance throughout the year. In spring, the emerging foliage presents a fresh, vibrant green that signals new growth. The summer season focuses primarily on lush, green foliage, serving as a reliable backdrop. The true spectacle arrives in late summer, when the abundant flowers provide a long-lasting burst of color that attracts pollinators like bees and butterflies. As autumn approaches, the leaves turn warm hues of gold, bronze, and rust, and the dried seed pods add subtle architectural interest through the winter months.
