I'm going to order a mimosa tree and some horseradish from Stark Bro's this afternoon. One of my fondest childhood memories is the fragrance of the huge mimosa tree that grew in my grandparents yard. They had a big farm in Cleveland, Georgia and I loved it there. It broke my heart when they sold it. I was 16. I'm not sure how a mimosa will do in the mountains of WNC, but I'm going to give it a try. The catalogue says good in zones 5 - 10 and I'm in 6B. The hummingbirds will love it and hopefully the bees will, also.
I've grown horseradish before and although it can be invasive, I love the flavor of the freshly grated root. I'll give it a place of it's own to grow. I started a rhubarb bed last year, and the plants did quite well. Again, a dedicated bed because rhubarb is a long-lasting perennial.
I'm just rambling today because I'm bored. I think I'm going to have to learn to knit!