How to Grow Sedum (Stonecrop)

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Sedum (Stonecrop)

Sedum spp.

succulent

Sedums are hardy, drought-tolerant succulent plants with fleshy leaves that store water, making them ideal for low-maintenance gardens. They range from low groundcovers to upright shrubby varieties and produce attractive star-shaped flowers in late summer and fall. Available in numerous colors from green and blue-gray to deep red and purple, they thrive in difficult conditions where other plants struggle.

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Example Sedum (Stonecrop) timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Sedum (Stonecrop)

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Sedum (Stonecrop)

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Sedum (Stonecrop) dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6+ hours daily; afternoon shade beneficial in hot climates (zones 9+)
💧
Water: Water sparingly; allow soil to dry completely between waterings. During growing season (spring/summer), water every 2-3 weeks. Reduce to monthly or less in fall/winter dormancy. Overwatering is the primary cause of failure; err on the side of dry.
📏
Spacing: 6-18 inches depending on variety (spreading groundcovers closer, upright types wider) inches
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Days to maturity: Variable; most sedums reach mature size in 1-3 years
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Planting depth: Shallow planting at soil surface; do not bury leaves of low rosette types

Soil

Type: Well-draining sandy or gravelly soil, cactus/succulent mix preferred
pH: 6.0-7.0
Amendments:
Perlite or pumice (30-50% of mix) Coarse sand Gravel or small stones Avoid heavy compost and peat moss

Growing Zones

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Hardiness varies by species; most thrive in zones 3-11, with tender varieties suited to zones 9-11

3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b

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Growth Stages

1

Establishment

4-8 weeks

Young plants with developing root systems; compact rosettes or low mounding growth

Water lightly every 2-3 weeks until rooted; provide bright light; protect from extreme heat and cold

2

Vegetative Growth

Several months to first year

Plant expands, produces more leaves and branches; may develop color stress (purple/red tones) if slightly water-stressed

Reduce watering further once established; allow light drought stress for deeper colors; fertilize sparingly (low-nitrogen formula) in spring only

3

Flowering

Late summer through fall (August-November)

Produces clusters of small star-shaped flowers in white, pink, red, or yellow; flowers emerge from branch terminals

Maintain dry conditions; do not overwater during bloom; flowers last 2-4 weeks; deadheading optional

4

Dormancy/Winter

December-February

Growth slows or stops; many varieties take on deeper colors (reds, purples); some deciduous types lose leaves

Minimal or no watering; no fertilizer; some frost-tender varieties should be brought indoors; hardy types tolerate freezing

5

Spring Awakening

March-May

New growth emerges; foliage brightens as temperatures warm; deciduous types leaf out

Begin light watering as growth starts; repot if needed; gradually increase sunlight if they wintered indoors

Companion Planting

Plan your garden →

Plant with:

Avoid planting near:

Water-loving plants (ferns, hostas, astilbe) Plants requiring frequent watering Shade-demanding plants in full-sun settings Invasive spreading plants in containers

Common Pests

  • Isolate infected plants; spray with insecticidal soap or neem oil; wipe with 70% isopropyl alcohol on cotton swabs

  • Improve drainage immediately; repot into fresh, dry soil; reduce watering; remove affected tissue; prevention is key (proper watering)

  • Strong water spray to dislodge; insecticidal soap; neem oil; usually not a major problem on succulents

  • Increase humidity slightly; spray with water or neem oil; isolate severely infested plants

  • Manually remove; spray with horticultural oil or insecticidal soap; treat every 7-10 days as needed

  • and

    Handpick; copper tape or barriers around pots; slug baits; remove hiding spots and reduce moisture

Uses

🌿

Living Roofs and Green Walls

Horticultural

Sedums are the primary plant for extensive green roofs due to their shallow root systems and extreme drought tolerance. They reduce building energy costs, manage stormwater runoff, and provide insulation. [source]

🍳

Edible Stonecrop (Sedum reflexum, S. album)

Culinary

Several sedum species are edible and used in salads, teas, and traditional medicine; they have a slightly tart, herbaceous flavor. Rich in antioxidants and minerals, they are gaining popularity in Nordic and Asian cuisines. [source]

💊

Traditional Herbal Remedy

Medicinal

Some sedum species (e.g., Sedum acre, Sedum telephium) have been used in traditional herbalism for inflammation, digestive issues, and wound healing. Modern research is investigating their phytochemical compounds. [source]

🎨

Floral Arrangements and Dried Décor

Craft

Sedum flower heads are prized for fresh and dried floral designs; they hold their form exceptionally well for months. The seed heads provide winter interest and texture in bouquets and garden installations. [source]

🦋

Pollinator and Beneficial Insect Support

Wildlife

Late-blooming sedums provide crucial late-season nectar and pollen for bees, butterflies, and hoverflies when few other plants are flowering. They support beneficial insects that control garden pests. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Sedums are not harvested for edible parts in the traditional sense. For propagation, remove mature rosettes or leaves and allow to callus (3-5 days), then place on dry soil; they root in 1-2 weeks. For dried flower arrangements, cut stems in late summer before full bloom; hang upside-down to dry.

Fun Facts

  • 🌱 Sedums can regenerate entire new plants from a single fallen leaf—simply place it on moist soil and it will root and sprout within weeks, making them nature's perfect propagation machine.
  • 🌱 The name 'stonecrop' comes from the plants' traditional use in medieval stonework and thatch roofing, where they would naturally colonize porous materials and help bind them together.
  • 🌱 Sedums practice 'crassulacean acid metabolism' (CAM photosynthesis), a unique adaptation that allows them to open their leaf pores at night to conserve water during hot days—the opposite of most plants.

Gardening Terms

New to gardening? Learn about terms used in this guide:

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