"Ryegrass as a species is the single most important plant in the New Zealand economy." Our animals love to eat it and we love to grow it, but what really are the differences in the varieties of ryegrasses out there? From annual, hybrid and perennial types to diploids and tetraploids, there’s a lot to cover here, including one of the most overlooked factors in getting the best out of your ryegrass – its flowering date. Let Al and Juddy take you for a wander through a topic on ryegrasses and get an appreciation for just how important it is to New Zealand’s agriculture.