Scientific Name
Micranthocereus auriazureus Buining & Brederoo
Synonym(s)
Micranthocereus auri-azureus
Scientific Classification
Family: Cactaceae
Subfamily: Cactoideae
Tribe: Cereeae
Genus: Micranthocereus
Origin
Micranthocereus auriazureus is endemic to Brazil.
Description
Micranthocereus auriazureus, also known as Micranthocereus auri-azureus, is a columnar cactus with stems that emerge near the base, forming a large clump. The stems are green, with many shallow, closely spaced ribs lined with dense clusters of golden spines. They can grow up to 4 feet (1.2 m) tall and 3 inches (7.5 cm) in diameter.
The tubular flowers, which are orange, pink, or purple, appear from a lateral cephalium in spring and summer.
Hardiness
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. Ensure 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. Cut away the affected parts and replant them. 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, ensure the soil is dry and then remove the pot. Knock away old soil, prune away rotted or dead roots, then replace it in a new pot and backfill it with fresh soil. Ensure that cacti are not overwatered when 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.
Links
- Back to genus Micranthocereus
- Succupedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus
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