Sempervivum heuffelii 'Mystique'
Product details
| Management number | 250425701 | Release Date | 2026/09/17 | List Price | US$3.20 | Model Number | 250425701 | ||
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- Description
- Sempervivum heuffelii 'Mystique' Care Guide
- FAQ/Common Issues
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Sempervivum heuffelii 'Mystique' is a rare alpine succulent from the Crassulaceae family, native to rocky mountain terrain across central and southeastern Europe. It evolved in harsh alpine conditions where winter frost and sparse soil are the norm, making it one of the toughest outdoor succulents available.
'Mystique' forms tight, symmetrical rosettes packed with fleshy, pointed leaves in reddish-brown, burgundy, and dusky plum tones depending on sun exposure and season.
It produces star-shaped pale yellow to creamy flowers on upright stalks in summer, with mature rosettes blooming once before the flowering rosette naturally gives way to fresh new growth from surrounding offsets.
Move it outside for summer to soak up full sun, or display it in rock gardens, alpine troughs, and balcony arrangements where it handles wind and temperature swings with ease. It survives dry heated indoor air and tolerates drafts. You can leave it up to ten days without water. This alpine succulent is pet-friendly and safe for cats and dogs.
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Sempervivum heuffelii 'Mystique' grows well in partial sun to full sun, needing at least four to six hours of direct light daily.
Water it deeply but infrequently, allowing the soil to dry completely between waterings, roughly every two to three weeks indoors.
'Mystique' grows best in a gritty, fast-draining mix such as cactus soil blended with coarse perlite or pumice at a 50/50 ratio.
It handles temperatures ranging from around 25°F up to 90°F, demonstrating impressive frost hardiness.
'Mystique' is a slow to moderate grower requiring little to no fertilizer, with perhaps one light spring feeding if desired.
It is hardy in USDA zones 4 through 9, tolerating winter temperatures as low as -30°F. It grows outdoors year-round across Montana, Wyoming, North Dakota, South Dakota, Minnesota, Wisconsin, Michigan, New York, Vermont, New Hampshire, Maine, Massachusetts, Connecticut, Rhode Island, Pennsylvania, Ohio, Indiana, Illinois, Iowa, Nebraska, Kansas, Missouri, Colorado, Utah, Idaho, Oregon, Washington, Virginia, West Virginia, Kentucky, Tennessee, North Carolina, Maryland, Delaware, and New Jersey. It also grows in cooler microclimates and seasonal displays in Arkansas, Oklahoma, Texas, Georgia, South Carolina, Alabama, Mississippi, Louisiana, Nevada, Arizona, and California.
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Q: Is Sempervivum heuffelii 'Mystique' pet friendly?
A: It is non-toxic to cats and dogs and can be displayed freely without worry.
Q: How much direct light does it need to develop its best colors?
A: Sempervivum heuffelii 'Mystique' colors intensify most deeply with four to six hours of direct sunlight daily; outdoor placement in summer maximizes pigmentation by pushing anthocyanin production in response to UV exposure.
Q: Does 'Mystique' need fertilizer?
A: No, it requires little to no feeding, and a single light application in spring is optional.
Q: How does it propagate?
A: 'Mystique' offsets by splitting from the base rather than producing runners, forming tight clusters of new rosettes around the mother plant that can be separated and replanted in well-draining gritty soil.
Q: What happens if 'Mystique' stays too wet?
A: The roots decay when soil remains consistently moist, so ensure the growing medium drains within minutes of watering and does not hold water between applications.
Q: Can it survive outdoors in cold winter climates?
A: 'Mystique' remains frost tolerant well into winter, surviving temperatures down to -30°F without any protection in USDA zones 4 through 9.
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Succulent
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