Reed canary grass grows fast and is easy to find in wetland areas, where it can proliferate easily in the wet soil. Like some other forage crops, reed canary grass can be hard to graze if it gets too tall. The grass becomes more bitter and less inviting to the herd, and livestock tend to only be interested in the leaves of reed canary grass if the crop has overgrown. It is important to graze reed canary grass pastures regularly to avoid this, as it can slow livestock growth. Grazing experts recommend using the pasture as a hay crop if the grass grows too tall.