Common name: Helecho Costilla de Vaca, Chilean Hard-fern, Blechnum chilense Height: 2m Growing: fast Foliage: evergreen fern, with dark green upright leathery fronds upto 1-2m. Flowers / Fruits: n/a Site: sun to shade Soil: acidic to neutral Irrigation: abundant Hardiness: -15ºC Long description: Strong and herbaceous fern, which forms large populations up to 2 m in height. Populations of large bundels are formed due to reproduction of specimens, which stay united. The Chilean Hard-fern has lanceolate oval foliage with bold leathery dark green finns. The fronds of Blechnum chilensis are deciduous with age. The foliage tends to have a somewhat sad look due to thin parts in the fronds, causing the leaves to double in the ‘wrong’ direction. However, this is the presentation of the plant. Its stalks are well developed, ligneous and have a dark coffee-like color. They are covered with reddish coffee colored scales. New sprouts are found within the rizomes on the surface of the soil. Spores can be found on the lower surface of the leaves and can completely cover this surface.