Geranium macrorrhizum, commonly known as bigroot geranium or rock cranesbill, is a hardy, aromatic perennial native to southeastern Europe, prized for its versatility and resilience in garden settings. It forms dense mats of semi-evergreen, deeply lobed leaves that emit a pleasant, spicy fragrance when crushed. In late spring to early summer, the plant bursts into bloom with clusters of five-petaled flowers in shades of pink, magenta, or purple, accented by prominent stamens and reddish calyces that continue to add color even after flowering.
Thriving in a wide range of conditions—from full sun to partial shade and in most well-drained soils—Geranium macrorrhizum is especially valued as a tough, low-maintenance ground cover. Its thick, rhizomatous roots enable it to spread steadily, suppressing weeds and stabilizing slopes or dry areas beneath trees where many plants struggle to grow. It is drought-tolerant once established, deer- and rabbit-resistant, and attracts pollinators such as bees and butterflies. With its fragrant foliage, long-lasting beauty, and adaptability, Geranium macrorrhizum is an excellent choice for borders, rock gardens, or naturalized plantings where reliable, low-care performance is desired.