Pack Size: 20, 2021
Year: 2021
Accepted Scientific Name: Trichocereus pasacana
Origin and Habitat:
Trichocereus pasacana, also known as the Argentine giant cactus, is native to the Andes Mountains in South America. It grows at high altitudes in arid, rocky environments across Argentina, Bolivia, and Chile. This hardy species thrives in nutrient-poor soils, enduring harsh winds, intense sunlight, and significant temperature fluctuations.
Description:
This majestic columnar cactus can reach heights of 120-180 inches, with thick, cylindrical stems covered in prominent ribs and long spines. It produces stunning, large, tubular flowers in shades of white, which bloom primarily at night. These flowers often give way to edible, red fruit.
Cultivation:
Zone: Suitable for USDA zones 9-11.
Temperature: Prefers temperatures above 10°C; tolerates occasional drops to 5°C but not frost.
Growth Rate: Slow-growing, with significant height achieved over decades.
Soil: Use a well-draining cactus mix with pumice for aeration and water retention balance.
Watering: Water deeply but infrequently, allowing the soil to dry out completely between waterings. Reduce watering during the winter.
Fertilizing: Feed with a cactus fertilizer every 2-3 weeks during the growing season (spring and summer).
Light: Requires full sun for optimal growth; ensure gradual acclimation to prevent scorching.
Pests and Diseases: Susceptible to pests such as scale insects and spider mites. Root rot may occur in poorly draining soils or with overwatering.
Germination Info:
Temperature: Maintain a constant 27°C.
Surface Sown: Yes.
