A perfectly shaped, tough-as-nails, dwarf pine tree. ‘Tannenbaum’ has an open shape in youth but consistently matures to a compact, pyramidal form. Because it is vegetatively propagated and grafted on P. sylvestris rootstock, you won’t see the variability in size and form so often associated with Mugo pine. All of these outstanding attributes would make ‘Tannenbaum’ an excellent choice for a specimen tree. Exceptionally cold hardy. From South Dakota State University.