Tricho.cereus macrogon.us, also known as Echinopsis mac.rogona, is a columnar cactus belonging to the Cactaceae family. T. macr.ogonus is hypothesized to be native to Peru, although recent efforts have failed to find the species in previously assumed native regions. This species can grow up to 20 feet tall with a diameter of 6 to 8 inches. Long yellow central spines line each areole and are surrounded by much smaller spines, all of which turn gray with maturity. Flowers typically bloom in warmer months in late spring to early summer. The flowers measure around 6 to 8 inches in diameter with cream to light pink colored sepals that have points at the tip of each giving the flower a star like appearance. Tricho.cereus macr.ogonus is typically grown as a medicinal plant for its psychoactive properties, although it is also grown as an ornamental for its yellow colored spines and drought tolerance. This species prefers full sun sitting in well draining soil and low humidity with high air flow. Water adequately in hot months of the year and decrease watering during cooler months. USDA hardiness zone 9 through 11.
Trichoce.reus m.acrogonus seeds require consistent moisture and humidity to germinate, but the soil should not be soaking wet. Cloning boxes, ziplock bags, and other containers that retain humidity are ideal to store sown pots. Use a well-draining sterilized soil mix. Seeds should be sown directly on top of the potting mixture and lightly covered with sand or potting mix, just enough to cover the seeds. Germinating pots should be kept indoors, out of extreme light and heat. Ideal germination temperatures range from 75°F to 85°F. Germination typically takes 2 to 6 weeks to occur. Even with optimal conditions, germination may be slow and sporadic.
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