How to Grow Sedum and Sempervivum (Stonecrop and Houseleek)
Sedum and Sempervivum (Stonecrop and Houseleek)
Sedum spp. and Sempervivum spp.
succulentSedum and Sempervivum are hardy succulent plants valued for their fleshy leaves and exceptional drought tolerance. While both are sedums (family Crassulaceae), they are often grown together in rock gardens, containers, and living roofs due to their complementary forms and similar care requirements. These low-maintenance plants produce small, star-shaped flowers and come in numerous colors ranging from green to deep purple and burgundy.
When should you plant Sedum and Sempervivum (Stonecrop and Houseleek) in your zone?
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Example Sedum and Sempervivum (Stonecrop and Houseleek) timeline · Pittsburgh, PA (Zone 6b)
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Plant Sedum and Sempervivum (Stonecrop and Houseleek)
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Sedum and Sempervivum (Stonecrop and Houseleek)
Late summer into fallBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Hardiest in zones 3-9; most varieties thrive in zones 4-8
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Get my Sedum and Sempervivum (Stonecrop and Houseleek) timeline →Growth Stages
Propagation/Establishment
2-4 weeksSingle leaves or small rosettes begin rooting and producing tiny leaves
Keep soil barely moist, provide bright indirect light, maintain warm temperatures (65-75°F)
Vegetative/Rosette Formation
4-8 weeksCompact rosette shapes develop; leaves thicken and color becomes more pronounced
Increase light gradually to full sun; maintain dry conditions; avoid high humidity
Maturation
Ongoing (2-3 months to full maturity)Plant reaches full size and form; color deepens with sun exposure
Transition to full outdoor sun if needed; continue dry watering schedule; pinch back if desired for branching
Flowering
4-8 weeksStar-shaped flowers in shades of pink, yellow, red, or white appear on inflorescences
Flowers typically appear mid-summer to fall; minimal intervention needed; some varieties self-seed
Dormancy/Winter Rest
3-4 months (depending on climate)Hardy varieties slow growth or go dormant; foliage may darken or bronze
Outdoor hardy types need no water; indoor plants need minimal water; protect from freeze-thaw cycles with mulch if in marginal zones
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with insecticidal soap or horticultural oil; isolate affected plants; remove with rubbing alcohol on cotton swab
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Improve drainage immediately; reduce watering; repot in fresh dry soil; remove affected portions; ensure air circulation
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Increase humidity slightly (mist occasionally); spray with water or insecticidal soap; improve air circulation
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Remove by hand; create barriers with coarse sand or gravel; slug baits around plants (keep away from pets)
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Improve air circulation; avoid overhead watering; apply sulfur dust or fungicide if severe; remove affected leaves
Uses
Living Roofs and Green Walls
HouseholdSedum and Sempervivum are industry standards for extensive green roofs and vertical gardens due to their shallow root systems, drought tolerance, and lightweight nature. They reduce heat island effect and stormwater runoff while requiring minimal maintenance. [source]
Container and Rock Garden Design
CraftThese succulents are ideal for designing visually striking alpine troughs, hypertufa planters, fairy gardens, and mixed succulent containers. Their varied colors, textures, and rosette shapes create year-round interest with minimal effort. [source]
Pollinator Support
WildlifeThe star-shaped flowers attract bees, butterflies, and other pollinators during mid-to-late summer and fall when other forage may be scarce. They provide valuable nectar and support for beneficial insects. [source]
Traditional Herbal Remedies
MedicinalSempervivum tectorum (common houseleek) has a long folk history in European herbal medicine for treating minor skin irritations and burns. Modern herbalists sometimes use topical applications, though scientific evidence is limited. [source]
Edible Garnish and Salads
CulinarySome Sedum species (like Sedum reflexum leaves) are edible with a slightly tart, crispy texture and are occasionally used as ornamental garnishes or additions to salads. Always verify species before consuming. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Sedum and Sempervivum are ornamental plants, not typically harvested for food. However, leaves can be propagated year-round: gently twist off healthy leaves, let callus form for 3-5 days, then place on dry soil. Cut flowers can be used in arrangements. Deadhead spent flowers to encourage tidiness, though self-seeding is minimal.
Fun Facts
- 🌱 Sempervivum tectorum earned the common name 'houseleek' because it was traditionally grown on thatched roofs to protect houses from fire and lightning strikes—a custom documented since medieval times.
- 🌱 Both genera can regenerate from a single leaf: if a leaf is detached and placed on moist soil, it will develop a complete new rosette plant, making them incredibly easy to propagate.
- 🌱 Sedum and Sempervivum have a specialized metabolism called CAM (Crassulacean Acid Metabolism) that allows them to open their stomata at night to conserve water during hot days, making them supremely adapted to arid conditions.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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