It can and humans (like birds) do disperse genetic material. However we are talking about deliberately curated food forests. The European forests, in contrast

It can and humans (like birds) do disperse genetic material. However we are talking about deliberately curated food forests. The European forests, in contrast were not like that. I remember reading about accounts from settlers in North America noting the park like quality of some of the forests. As another example, here where I live in the Sonoran (Phoenix), there are a lot of chollas. Those have nasty barbed thorns, but they also produce fruits. There is another native plant that has sticky leaves and can be used to brush off the thorns so that the fruits can be harvested. I learned this from one of Brad Landcaster’s videos on this; Landcaster said he learned it from one of the native elders. They would deliberately plant the plant with sticky leaves near chollas.