Oreocereus fossulatus (white spines). (Cactaceae) Old Man of the Andes, Old man of the mountain. Native to Argentina, Bolivia and Peru. It is a branching columnar ribbed cactus which is covered in fine white hair and sharp spines. Sowing: Fill a pot with a moist, gritty, loam-based compost, or cacti compost. Gently firm down and level the surface. Scatter your mixed cactus seeds over the surface, taking care not to sow them too thickly. Gently sprinkle a thin layer of vermiculite or fine grit over the seeds, covering the whole surface of the compost. Leave the pot in a greenhouse or on a warm windowsill, covered with a clear plastic bag to preserve soil moisture. Seedlings will develop within a few weeks. Remove the plastic bag and water when the compost becomes dry, but spray the surface with water regularly, to keep it moist. Locality: Ex Hort. Harvest: October 2023
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