Origin and Habitat: Echinopsis terscheckii (Trichocereus terscheckii) has a relatively wide range in Argentina (Catamarca, Salta, Jujuy, La Rioja, San Juan and Tucumán provinces) and Bolivia (Tarija) Description: Echinopsis terscheckii best known in cultivation as Trichocereus terscheckii is a huge treelike cactus species, called in Argentina cardon grande. At first columnar, and usually in age with numerous large arms, 10 to 12 meters high. Blooming season: The plants flower at various times of the year, but primarily during the rainy season (Summer). Soil: It needs a well drained soil mix.Waterings: Water regularly in summer but allow to dry fully before watering again. During the winter months they should be rather kept dry.Re-potting: Since it is a big-sized plant, it needs plenty of space for its roots. Repotting should be done every other year, or when the plant has outgrown its pot.Exposition: Light shade when young, full sun later. Outside it likes strong sunshine, but is tolerant and do well with light shade during the hot Summer months, inside it needs bright light, and some direct sun. Tends to bronze in strong light, which encourages spine production.Garden uses: Excellent as landscape or patio plant. It is suitable for “desert” gardens, in association with other xerophytes. Where the open air cultivation is not possible due to the climate, it is to be cultivated in pot in order to shelter it in winter. It look fine in a cold greenhouse and frame.Traditional uses: This species was intensively used for several purposes such as construction materials and art and crafts. The wood appears to rot rather quickly and lacks the characteristics of good lumber. Still, local people are said to fashion rustic furniture from the branches. It also appear to be important fodder for livestock, especially goats, functioning as a time-release food as they drop to the ground over an extended period of time. Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz