Cereus validus Haw.
Piptanthocereus validus, Cereus forbesii, Piptanthocereus forbesii
Cereus validus is a ribbed columnar cactus with blue-green trunk and brown spines, up to 20 feet (6 m). In the summertime white flowers will appear. The flowers are followed by ornamental red fruits.
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 best results. If the roots have become black or overly soft, the cactus could be experiencing root rot – cut away the affected parts and replant. Like all cacti, give them lots of direct sunlight, especially during the summer. Well-drained soil is best, and most Cereus perform well in a soil that contains some organic material. Some recommend avoiding a soil that contains sphagnum moss, though – it can make the cactus vulnerable to root rot.
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… – See more at: How to Grow and Care for Cereus.
Native to South America.
Subspecies, Varieties, Forms, Cultivars and Hybrids
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