Garden

Pino del Paranа - Araucaria araucana


Generalitа


Araucaria araucana (Sin. Araucaria imbricata - Pino del Paranа - Pine of Chile).
Origin: Chile. Maximum height 30 m. Rustic, with glossy green, sharp, thorny leaves at the apex. The leathery leaves change about every 10 years. The bark is gray and wrinkled, very thick. Produces pine cones about 15 cm long. The branches are, in young age, arranged horizontally and the plant takes on a conical shape. In adulthood, on the other hand, the plant takes on a more rounded shape and the lower branches face downwards. Requires acid and well-drained soils.
This genus includes about twenty species of evergreen conifers, originating in South America and Australia; A. araucana, also called imbricata, is the only species that bears rigid winters; other species grown in the gardens are A. bildwillii and A. heterophylla, which slightly fear the cold; A. excelsa is a species grown as a houseplant. The stem is powerful, erect; these trees grow very slowly, but can reach 25-30 meters in height. The ramifications are horizontal, quite branched; the foliage is dark green, stiff and thick, pointed, reminiscent of triangular scales. The pyramidal hair tends to lengthen as the years go by. The specimens of at least 20-30 years produce inflorescences similar to large pine cones, rounded in the case of female trees, while the male trees produce more elongated, almost cylindrical inflorescences. Inside the cones of the female trees there are numerous fertile, edible seeds. The a. araucana in the places of origin are in danger of extinction, they are therefore protected by international conventions, for this reason in Europe can only circulate specimens coming from cultivation, and not taken in kind.

Exposure



A. araucana is an evergreen plant, which doesn't fear cold temperatures, we suggest locating it in a sunny place, sheltered from the wind; in general the Paranа pine can easily withstand the heat, but in areas with very hot summers it is advisable to place the plant in a partially shaded place, or to choose a less rustic variety, which prefers the heat. Before placing an araucaria in the habitation it is good to consider what are the final dimensions of this tree, which can become very large, and is therefore suitable as a single specimen.

Watering



in general, the Paranа pine trees can withstand periods of drought even without problems; the young plants that have just been planted, however, must be watered during the hot season, waiting for the soil to be dry between one watering and another. In autumn, spread a mature organic fertilizer at the base of the plant.

Ground



The specimens of Paranа pine grow in the common garden soil, preferring the deep and soft, very well drained soil.

Multiplication


The multiplication takes place by seed, in spring, or by cuttings. These plants grow very slowly, so the young specimens take many years to reach a size suitable to be placed in the garden.

Pests and diseases



these plants are unlikely to be massively attacked by pests or diseases, although they can sometimes be affected by aphids and cochineal; in general, suffering plants can experience the symptoms of excessive watering or prolonged periods of drought.

Araucaria Bildwillii


Origin: Australia.
Maximum height 2-3 m if cultivated in pot, 30 meters in nature.
Semirustica, with glossy green leaves, thorny at the apex, cultivated as a houseplant.

Araucaria Heterophylla


Origin: Australia.
Maximum height 2-3 m if cultivated in pot, 30 meters in nature.
Semirustica, with needle-like leaves, glossy green, it produces 15 cm long pine cones. It is used as a houseplant. It grows well in the shade.

Pino del Paranа - Araucaria araucana: Araucaria Excelsa



Origin: Australia.
Maximum height 2 m if cultivated in pot. In nature it can reach 50 meters in height.
Sensitive to the cold, it is grown as a houseplant. It has a conical crown, with horizontal branches with glossy green leaves, needle-like and slightly thorny. Requires acid and well-drained soils.