The name Nana means dwarf.
Gerd Krussmann in Manual of Cultivated Conifers staes 'Dwarf form, small, bushy, only about 50cm high, very densely branched, twigs very short, needes about 3 cm long and Blue-green.'
Krussman points that the cultivar Watereri is often improperly sold as Nana.
Conifers The Illustrated Encyclopedia has a good picture of a very large, old specimen. The caption with that picture states that Nana grows much slower than Watereri.
