Phacelia tanacetifolia, commonly known as lacy phacelia or fiddleneck, is an annual wildflower native to the southwestern United States and northern Mexico, prized for its delicate beauty and ecological value. Belonging to the borage family (Boraginaceae), it grows 1 to 3 feet (30 to 90 cm) tall with finely divided, fern-like leaves that give the plant a soft, feathery texture. From late spring through summer, it produces coiled flower clusters that unroll as they bloom, revealing numerous pale lavender to blue-violet, bell-shaped flowers adorned with long, protruding stamens. The blossoms are highly attractive to bees, butterflies, and other pollinators, making Phacelia tanacetifolia one of the most effective plants for improving biodiversity and supporting pollinator populations. It thrives in full sun and well-drained soil, tolerating dry and poor conditions, and is frequently used as a cover crop, green manure, or companion plant for its ability to improve soil structure and suppress weeds. With its graceful appearance and ecological benefits, lacy phacelia bridges ornamental and agricultural use, offering both visual charm and environmental value in gardens and fields alike.