No, once it's upgraded it is tied to whatever crop you set.

Thanks

Booo! I wish they also still foraged. Like, what's the point?

引用自 Xantherous：

Booo! I wish they also still foraged. Like, what's the point?

I believe it so you can grow collect say mushrooms, if there are none in your area. If you don't want to upgrade a forager don't. Or just build and upgrade new foragers to grow what you need.

It's nice to be able to harvest the harder to get stuff like medicinal roots, reeds or even herbs, but upgrading a building that's harvesting 20+ mixed bushes to 6 of one type is a massive decrease in food input/variety (unless you're playing on a very hard difficulty where you don't get such a density of edible bush spawns).