So I actually have fennel overtaking my garden and fighting my dad's bamboo Bush for space in the summer and every so often near August I'm reminded to take a picture to show you, Elder bones, before the frost and before we harvest the stalks but I never do. I'm especially reminded because of your shade comment--he has a nut tree/Bush (I will definitely take a picture of it and show you) that is reccomend to grow under shade only and he planted it in direct sunlight and it's doing great. My mom says it a farmer thing, but idk. I usually put a few of these in Windclan cause why not?

Plenty of hardy plants will grow in whatever conditions! The shade comment is probably the one I made about lungwort. Usually wild herb species like that are pretty delicate, which is why conservation is so important.

But WindClan would be pretty prone to having trees start to grow there. Moorland naturally successes to sparse woodland if undisturbed, and it's why periodic muirburns are integral to maintaining them.

So a nut tree could be planted there and grow unencumbered if it could handle full sun, but watch out, because if that tree can survive more will follow!