Thank you for your submissions.
Out of all of them I prefer #17 the most. The colors are good and the partial circle around the design is a nice addition. I prefer the grey in 17 to the green in 18. I don't care for the color scheme in #15 it seems too dark. #12 has great colors with the beige and use of negative space roots but the logo seems unfinished or disconnected. It is defintely what I requested but somehow it doesn't work. Maybe you could find a way to tie it all together somehow.
Maybe the design should be less simple? I'm certainly open to suggestions.