Juniper Procumbens "nana". This dwarf Juniper bonsai tree from Japan is the most popular evergreen in the U.S. When we think of a traditional bonsai tree and what it should look like, we think of a "Juniper Procumbens Nana." It is very hardy, long-lived, and tolerates many adverse conditions. This is an excellent tree for the beginner. This tree is grown with care at Bonsai Boy of New York Nurseries. Watch out for imitations.