Pinus nigra 'GREEN TOWER' Austrian pine
size/type
medium-sized shrub,medium-sized shrub
usual height
2-3m
usual width
0,5-1m
leaves
evergreen conifer
colour of leaves
location
full sun
USDA zone (lowest)
4 (down to -34°C)
winter protection
for zone 5+6
for zone 7
categorized
Austrian (black) pine is a hardy tree which escaped Austria in early 20th century, and now can be found all around Europe, down to Turkey, and in North Africa. Hard to say if Mother Nature needed a stronger substitute for more tender species in the ever changing climate, or whether this one is simply invasive. In any case its more than a century old journey has proved its toughness and durability, no wonder that new varieties are being bred and selected. They generally offer a much shorter growth and different habit suitable for common-sized gardens.
Description of the plant:
Green Tower is a fastigiate and dwarf variety of Austrian pine. It was found as a seedling, possibly of Pyramidalis variety, by Martin Zimmer in late 1990's. It has about 10 cm, stiff, dark green needles borne in whorls of 2. It grows slowly - 20 cm per year and makes a very narrow tree which will fit almost any garden. Its branches are strong and do not bend under a fresh load of wet snow. Pines need full sun and well-drained soil that will not be too alkaline. No fertilizing required. Pruning is possible in late winter or late summer, never cut into branches which lack needles. You can shape the tree by removing or trimming "candles" - young new shoots before they develop proper-size needles. Austrian pine is commonly hardy to about -40°C (USDA zone 3) and this variety is supposed to withstand at least -34°C (USDA zone 4). It is also hardy for growing in a container were it will be prone to lose older needles sooner.
Last update 10-11-2018
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GLOSSARY
- STANDARD QUALITY - Plants of this group are 1st class quality with number of branches and overall density adequate to their size and age, considering they were container grown.
- DE LUXE QUALITY - This label guarantees a luxurious quality of manually selected plants that, compared to their height and age, are exceptionally dense and beautiful.
- EXTRA - These plants are usually mature and bigger specimens with exceptional overall appearance.
- STANDARD (as described in the plant form) means a tree with a trunk of 190-210 cm and a crown at the top, unless specified differently. The commercial size for trees is their girth measured in the height of 1m from ground.
- HOBBY - These plants are of the same quality as our standard-quality plants but younger and therefore cheaper.
- SHRUB - a woody plant with branches growing bushy from the ground level.
- HALF-STANDARD or MINI-STANDARD - a small tree with shorter trunk, its size is usually specified.
- FEATHERED - These are trees with branches growing already from the base of the trunk and up along the stem.
- GRASSES and PERENNIALS - Sizes given usually read the diameter of the pot or the clump, as specified.
