[Isabelle]

It occurred to me after writing the above posts that "sativa" is Latin for seeds, and "avena" for oats. So "avena sativa" just means that you need the oat seeds, or oat tops, as opposed to oat straw. Eve wrote in her program thread that you need oat tops, not oat straw.

While being seeds, "avena sativa" could still be either wild, i.e. from a botanical variety of oats (avena fatua or avena pubescens), or from some cultivar that is designed for maximum $ per acre in agriculture. I'm sure my herb shops will sell a wild variety, but I'll ask around whether it's avena fatua or avena pubescens.