Hordeum murinum, commonly known as wall barley or false barley, is an annual grass that is native to a variety of habitats including coastal areas, roadsides, and disturbed sites across the Mediterranean region, Central Europe, Western Asia, and North Africa. It typically grows up to 12 inches tall and features unbranched spikes that can reach 4 inches in length. Wall barley flowers from May to July, producing a modest display of greenish inflorescences. This species is well-adapted to urban environments and often colonizes empty lots and cracks in pavement.

Wall barley is valued for its ability to thrive in poor soil conditions and its resilience to drought, making it a suitable choice for xeriscaping and low-maintenance areas. It is also used for erosion control due to its fast growth and ability to establish quickly on disturbed sites. However, its invasive potential should be considered before planting, as it can spread rapidly and outcompete native vegetation. In cultivation, wall barley prefers well-drained, sandy, or gravelly soils and can tolerate a range of light conditions from full sun to partial shade. It is often found in areas with medium precipitation but can survive periods of drought.CC BY-SA 4.0