Phalaris brachystachys

About

Phalaris brachystachys, the confused canary-grass or shortspike canarygrass, is an annual grass with growth habits and cultural requirements similar to Phalaris aquatica. It is native to the Mediterranean region. It grows most actively during the spring and fall, while resting during the heat of midsummer and the short cool days of winter. It also must be protected from heavy freezes.

Summary from Wikipedia