At Hidden Gardens, south of Chicago the first Oktoberfest took place last weekend. As you can see the students work with very interesting material.
Next year's events at Hidden Gardens:
Wednesday, April 19, 2017: Int. Bonsai nAcademy evening session
Thursday to Sunday, Oct. 5 to 7, 2017: Oktoberfest 2017
Wednesday, November 29, 2017: Int. Bonsai Academy evening session