When it comes to finding natural remedies for seasonal allergies, stinging nettles (Urtica dioica) are a surprising powerhouse. Known for their prickly sting, these wild plants actually contain a wealth of anti-allergic properties—particularly in the fine, stinging hairs that often scare people away. But if you can get past the sting (or better yet, take them properly prepared), nettles may just become your new favorite spring and summer companion.