Scientific Name
Echinopsis mamillosa Gürkey
Synonym(s)
Echinopsis mamillosa subsp. mamillosa, Lobivia mamillosa
Scientific Classification
Family: Cactaceae
Subfamily: Cactoideae
Tribe: Trichocereeae
Genus: Echinopsis
Origin
Echinopsis mamillosa is native to Argentina (Jujuy, Salta) and Bolivia (Chuquisaca, Tarija).
Description
Echinopsis mamillosa, also known as Lobivia mamillosa, is a small cactus with a solitary spherical stem with 13 to 17 deep ribs divided into tubercles tipped with rounded areoles that bear a cluster of yellowish spines with brown tips. The stem can grow up to 12 inches (30 cm) tall and 10 inches (25 cm) in diameter. The areoles are up to 0.5 inches (1.2 cm) apart and bear 1 to 4 central and 8 to 12 radial spines.
The large flowers are white with rose tips, purple, or deep red. They appear in summer, open at night, and last about 24 hours, reaching up to 3.2 inches (8 cm) in diameter and up to 7.2 inches (18 cm) in length.
Hardiness
USDA hardiness zone 8b to 11b: from 15 °F (−9.4 °C) to 50 °F (+10 °C).
How to Grow and Care
If you can grow cacti and succulents successfully, you can likely grow the Echinopsis species without too much trouble. Like many cacti, they prefer a drying period between waterings, even when slightly wilt. When you water, however, you should water deeply. The plant will noticeably plump up. The cactus mustn't be exposed to prolonged dampness and sitting water. Never let your cactus sit in a dish of water. Lastly, fertilize during the growing season for the best results.
Echinopsis can be easily rooted from offsets that tend to cluster around the base of the mother plant. Cut offsets close to the stem, at the narrowest possible place. When rooting cacti from cuttings, let the fresh cutting dry out slightly on a paper towel and cut the cacti at the narrowest place possible. After a few days to a few weeks, depending on the size of the cut surface, the cut surface should have dried out and formed a callous or slightly rough opening. Once the callous has formed, place the cutting in a rooting mixture of fast-draining cacti soil.
See more at How to Grow and Care for Echinopsis.
Varieties and Forms
Links
- Back to genus Echinopsis
- Succupedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus
Photo Gallery
Click on a photo to see a larger version.
