Acaena inermis ‘Purpurea’, commonly called purple New Zealand burr or purple bidibid, is a striking groundcover plant prized for its rich, dusky foliage and ability to create a dense, textural carpet in the landscape. Native to New Zealand and bred for ornamental use, this low-growing perennial forms spreading mats of finely divided, fern-like leaves that emerge in deep shades of smoky purple to bronze, offering year-round color contrast against greener or lighter-toned companion plants. Unlike many other species of Acaena, ‘Purpurea’ is largely spineless and does not produce the troublesome clinging burrs, making it a more garden-friendly choice while still retaining the intricate foliage and mat-forming habit that defines the genus. In summer, small, rounded clusters of reddish flowers appear on short stems above the foliage, adding subtle seasonal interest without detracting from the overall uniformity of its groundcover effect. It thrives best in full sun to partial shade with well-drained soil and is particularly valued for its tolerance of drought and poor growing conditions once established, making it an excellent choice for dry slopes, rock gardens, pathways, or between stepping stones where a low, resilient cover is desired. With its soft, velvety texture and moody purple tones, Acaena inermis ‘Purpurea’ provides a bold alternative to traditional green groundcovers, pairing beautifully with silver-leaved plants, ornamental grasses, or bright-flowering perennials to create striking contrasts in modern and naturalistic designs. Compact, resilient, and easy to grow, it is both a practical and ornamental choice for gardeners seeking long-lasting color and texture in a low-maintenance form.