Mammilloydia candida Snowball Cactus
Product details
| Management number | 250425323 | Release Date | 2026/09/17 | List Price | US$5.40 | Model Number | 250425323 | ||
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- Description
- Mammilloydia candida Snowball Cactus Care Guide
- FAQ/Common Issues
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Mammilloydia candida, also called Snowball Cactus, is a cactus belonging to the family Cactaceae and native to the rocky, arid highlands of northeastern Mexico. It grows naturally in well-drained soils under intense sun and tolerates drought well.
The plant earns its common name from densely packed white spines that completely coat the green body in a snowy appearance. It grows upright with a clustering habit, producing offsets over time to form a compact mound. The contrast of white spines against the green stem suits both minimalist and bohemian interiors. 
Small pink to pale lavender flowers emerge in a ring near the crown, typically in spring. Blooms appear when the plant experiences a nighttime temperature drop during the cooler months. 
You can leave it up to ten days without water. Move it outside in summer for a growth boost, but shelter it from heavy rain to prevent rot. The sap can cause skin and paw irritation, so keep it on a high shelf out of reach of small children and pets. It naturally produces offsets that can be gently separated and allowed to callous for a day or two before planting in fresh cactus mix.
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Mammilloydia candida Snowball Cactus grows well in bright indirect light, partial sun, or full direct sun for at least four to six hours daily. 
Water it deeply every two to three weeks in summer, reducing to once a month or less in winter. 
Mammilloydia Candida does best in a gritty cactus mix combined with extra perlite or coarse sand for fast drainage. 
It prefers temperatures between 50 and 90°F and is not frost hardy below about 25°F. Mammilloydia Candida is a slow to moderate grower; a light balanced cactus fertilizer once in spring and once in summer is plenty.
It is hardy in USDA zones 9–11, tolerating brief dips to around 25°F but preferring frost-free conditions. It grows outdoors year-round across Florida, Hawaii, Southern California, coastal and central California, Texas, Arizona, New Mexico, Nevada, Louisiana, Georgia, Alabama, Mississippi, and South Carolina. It also grows in warmer elevations of Oregon's coast, Arkansas, and Tennessee.
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Q: How often should I water Mammilloydia candida Snowball Cactus?
A: Every two to three weeks during the growing season. Let the soil dry completely between waterings to prevent root rot, then scale back to once a month or less in winter.
Q: What window direction works best for light?
A: Mammilloydia candida Snowball Cactus grows well in a south- or east-facing window. Rotate the pot periodically so all sides receive even light exposure.
Q: Is Mammilloydia Candida safe around pets and children?
A: No. The sap can cause skin and paw irritation, so display it on a high shelf out of reach.
Q: How do I propagate this plant?
A: Mammilloydia Candida naturally produces offsets, or pups, that can be gently separated and allowed to callous for a day or two before planting in fresh cactus mix.
Q: Can Snowball Cactus survive a trip outdoors?
A: You can leave it unwatered for up to ten days. Just shelter it from rain to prevent root rot if it's outside.
Q: Why are the stems turning yellow?
A: Overwatering or poor drainage causes yellowing. Check that your soil drains quickly and that it dries fully between waterings.
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