Poa compressa, commonly known as Canada bluegrass or flattened meadow-grass, is a perennial grass that, despite its common name, is native to Europe and has been introduced to North America and other regions. It typically grows to a height of 10-60 cm and has a distinctive flattened, wiry stem with blue-green leaves. The grass prefers open areas and is often found in disturbed sites such as old wall tops, pavement cracks, and dry stony grasslands. It has a panicle inflorescence that is open and loose, with a flowering period from June to August. The flowers are not particularly showy, but the foliage has an attractive blue-green hue.

Canada bluegrass is valued for its ability to grow in poor, compacted soils and is sometimes used for erosion control or as a low-maintenance turf alternative in urban environments. It is drought-tolerant and can survive in full sun to part shade conditions. However, due to its invasive nature in some regions, it is important to consider its potential to spread before planting. In cultivation, it requires minimal care, thriving in a range of soil types, though it prefers well-drained soils.CC BY-SA 4.0