I would like to make a logo that has two simplified branches of barley that mirror each other and curve to a perfectly circular shape, like the following from http://culination.co:
I have tried to do it in Illustrator, Sketch and Pixelmator, but I can't seem to figure it out and can't find a tutorial. I tried making the pattern straight and curving it and when that didn't work, I tried making it curved, which was a total mess.
Does anyone have an idea how to do this elegantly?