Abies pinsapo'Horstmann' is an exceptional dwarf- to intermediate-growing selection of Spanish fir with typical foliage structure that is a vivid blue in color. While young plants are often seen with globose or spreading globose structure, a plant approaching maturity will develop a terminal leader eventually assuming a dense pyramidal form. After 10 years of growth a mature specimen will measure 3 feet (1 m) tall and and 2 feet (0.6 m) wide and will likely accelerate from that point unless controlled by careful pruning.
This cultivar originated in the mid 1970s as a witch's broom found on a specimen of Abies pinsapo 'Glauca' by Günter Horstmann of Schneverdingen, Germany and released into the nursery trade through his family's namesake nursery. To this day it is often seen listed under the names, 'Nana' and 'Horstmann's Nana' which, according to the ICBN, are illegitimate names for any cultivars named after 1959.
Abies pinsapo 'Horstmann' — a spectacular specimen in a private garden in the United Kingdom.
Photo by Steven Grubb
What about Picea abies 'Horstmann' ? There is a nursery here in Punta arenas (Chilean Patagonia) owned by a German family, and they sell this fir and also a yellow form of Picea abies, but sells it as 'Cesky pine'
Hello Punta ... Horstmann Nursery of Schneverdingen, Germany named 100s of conifer cultivars, all with the cultivar name 'Horstmann'. It's all quite messy and confusing. As for Picea abies, Günther Horstmann named 16 of them with the cultivar names 'Horstmann no. 1' through 'Horstmann no. 16' ... they are probably indistinguishable from each other and none of them is well known in the international nursery trade.
Be aware that Picea abies is a spruce, not a fir.
There are many golden cultivars of Norway spruce out there. One last thing ... "Cesky pine" is Czech for "Czech pine." I have no idea what this name has to do with Norway spruce.