Dactylis glomerata (orchardgrass) is an aggressive perennial grass (family Poaceae) widespread throughout California. It grows in any type of soil, is drought resistant, and can overrun-some grasslands. Orchardgrass is a desirable pasture grass but has escaped cultivation in many natural areas throughout the United States.
The invasion of exotic annual grasses such as Avena barbata, Bromus diandrus and Bromus hordeaceous into California grasslands has been so complete that control and restoration efforts largely focus on maintaining or augmenting native components in exotic-dominated stands. Annual grasses are afforded their own category in Cal-IPC_s list of exotic pest plants, effectively acknowledging that […]