Cereus repandus (L.) Mill.
Giant Club Cactus, Hedge Cactus, Apple Cactus, Peruvian Apple Cactus, Peruvian Apple, Peruvian Tree Cactus
Cactus repandus (basionym), Cereus peruvianus, Cactus peruvianus, Stenocereus peruvianus, Cereus grenadensis, Cereus margaritensis, Cereus remolinensis, Cereus atroviridis, Pilocereus repandus
Cereus repandus is a large, erect, columnar cactus with cylindrical, gray-green to blue stems that grow up to 33 feet (10 m) tall and up to 8 inches (20 cm) in diameter. The nocturnal flowers are up to 6 inches (15 cm) long and remain open for only one night. The fruits, known locally as Pitaya or Peruvian Apple, are thornless, violet-red to yellow and up to 2 inches (5 cm) in diameter.
USDA hardiness zones 9a to 11b: from 20 °F (−6.7 °C) to 45 °F (+7.2 °C).
How to Grow and Care
Like most cacti, Cereus are fairly low-maintenance and hardy. Make sure they receive enough water without becoming waterlogged, especially during the summer and fertilize them for the best results. If the roots have become black or overly soft, the cactus could be experiencing root rot. Cutaway the affected parts and replant. Most gardeners interested in cacti should be able to cultivate these without much problem.
It may become necessary to repot your Cereus if it outgrows its container. If so, make sure the soil is dry and then remove the pot. Knock away old soil and prune away any rotted or dead roots, then replace it in a new pot and backfill with new soil. Make sure not to overwater cacti planted in new pots, as this can lead to root rot. It should be left dry for about a week and then watered lightly.
These cacti propagate quite easily from cuttings. Simply sever a branch and replant in moist, well-drained soil… – See more at: How to Grow and Care for Cereus
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