Cereus albicaulis (Britton & Rose) Luetzelb.
Monvillea albicaulis, Acanthocereus albicaulis, Mirabella albicaulis
Cereus albicaulis is a cactus with weak stems, at first erect, then become elongating and arching. It grows up to 40 inches (1 m) tall and up to 1.2 inches (3 cm) in diameter. Stems have 4 ribs and 2 to 6 spines per areole. Flowers are white.
USDA hardiness zones 10a to 11b: from 30 °F (−1.1 °C) to 50 °F (+10 °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.
Learn more at How to Grow and Care for Cereus.
Native to Brazil (Bahia).
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