Dwarf Black Pine - Pinus nigra Nana

The Pinus nigra 'Nana' is a dwarf form of Austrian black pine perfectly suited to small spaces, rock gardens, and container gardening. With its naturally compact, rounded, regular habit, and dense foliage, it is a decorative conifer all year round. It requires very little maintenance, except for pruning in late winter. It is also a cold-resistant, drought-tolerant, and low-demanding plant in terms of soil. Plant it as a specimen or combine it with other conifers with different habits, colours, and textures.

The Pinus nigra, also known as Austrian black pine or simply black pine, is an evergreen conifer in the pine family, native to central and southern Europe, from Spain to Crimea, as well as in Asia Minor, Cyprus, and sporadically in the Atlas Mountains. In its natural habitat, it reaches or exceeds 35m (114.8ft) in height, with an open conical shape and a dense crown. It is a highly hardy species, well adapted to hot temperate climates and very chalky or clayey soils. It has good resistance to summer drought.

The 'Nana' variety has been planted and known since before 1855. It is distinguished by its very compact and slow growth. Its overall habit is conical and rounded, forming a ball. During the first years of cultivation, its growth is very slow, so it will only reach a height and width of 1.50m (3.3ft) by 10 years. Pruning the branches by half in late winter helps to enhance its dense appearance and limit its growth. Once well established, it grows about 30cm (11.8in) per year, reaching a mature height of 2.50m (6.6ft) to 3m (9.8ft) with a diameter of 2m (6.5ft). Its tightly packed ascending, whorled branches are covered with dark green, slender needles, 10cm (3.9 in) long, grouped in pairs and arranged in brushes, giving the foliage a slightly feathery appearance. On its trunk, the bark is brown-grey, covered with large flat scales surrounded by deep fissures that widen over the years.

The 'Nana' black pine will work well in a small or medium-sized garden, as a specimen, in a large rock garden, or as a hedge, planted in groups of three near an entrance, or on the edge of a woodland. It can also be grown in a large container for several years. It can planted at the edge of a grove, or its elegant evergreen foliage can be used as a backdrop to highlight flowering plants or the lighter foliage of other dwarf conifers and flowering shrubs. It pairs well with large stones, the geometric lines of pools or buildings, and masonry. It can be combined with complementary grasses or prostrate (Juniperus horizontalis Blue Chip) or globose (Picea abies Little Gem) dwarf conifers. The key is to play with volumes and colours.