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How to Grow Garnet Dome Sedum

Garnet Dome Sedum

Sedum x 'Garnet Dome'

flower

Garnet Dome is a compact succulent sedum cultivar prized for its deep burgundy-red foliage that intensifies in cool weather. It produces small pink to red flowers in late summer and fall, making it attractive to pollinators. This hardy, low-maintenance perennial is ideal for rock gardens, containers, and xeriscaping.

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

  1. Plant Garnet Dome Sedum

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. First Garnet Dome Sedum blooms

    Mid-to-late summer

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Garnet Dome Sedum dates for your own zip code.

Growing Conditions

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Sun: Full sun, 6+ hours daily (more sun deepens burgundy color)
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Water: Low water needs once established. Water sparingly; allow soil to dry between waterings. Overwatering is the primary cause of failure. Drought tolerant.
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Spacing: 12 inches
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Days to maturity: Mature size reached in 1-2 years
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Planting depth: Surface planting; barely cover roots or propagate from leaves

Soil

Type: Well-draining sandy loam or gritty soil
pH: 6.0-7.0
Amendments:
Coarse sand or perlite (25-30% by volume) Gravel or small stones Avoid adding compost or peat moss

Growing Zones

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Thrives in zones 4-9

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

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Growth Stages

1

Propagation & Establishment

2-4 weeks

Small rosettes form from leaf or stem cuttings; minimal root development visible

Keep cutting medium barely moist; root in 2-4 weeks. Minimize watering until roots establish.

2

Rosette Development

Spring through summer (4-6 months)

Dense mounding cushion of burgundy-red leaves forms; plant remains compact

Water only when soil is completely dry. No fertilizer needed. Remove any dead leaves at base.

3

Flowering

Late August through October (6-8 weeks)

Small clusters of pale pink to red star-shaped flowers emerge above foliage

No deadheading necessary, but you may remove spent flowers if desired. Continue minimal watering.

4

Winter Dormancy

November through March

Foliage deepens to dark garnet-burgundy; growth slows dramatically in cold climates

Do not water during dormancy. No fertilizer. Protect from excessive moisture rather than cold.

5

Spring Awakening

April through May

New growth emerges as temperatures warm; foliage lightens slightly as days lengthen

Resume minimal watering when growth resumes. Monitor for pests after dormancy.

Companion Planting

Plan your garden →

Plant with:

Sempervivum (Hens and Chicks) Echeveria Artemisia Lavender Santolina Armeria (Sea Pink) Dianthus Lamb's Ear (Stachys)

Avoid planting near:

Moisture-loving plants (hostas, ferns, astilbe) Plants requiring frequent watering Dense shade-loving groundcovers

Common Pests

  • Remove with rubbing alcohol on cotton swab; ensure good air circulation and avoid overwatering

  • Improve drainage immediately; repot in dry medium if necessary; reduce water frequency

  • Spray with insecticidal soap or strong water spray; rarely a serious problem

Uses

🎨

Succulent Arrangements & Containers

Craft

Garnet Dome's compact, colorful form makes it perfect for living succulent wreaths, fairy gardens, and mixed container plantings. Its deep burgundy color provides excellent contrast with lighter sedums. [source]

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Xeriscaping & Low-Maintenance Landscapes

Household

Ideal for water-wise garden design, rock gardens, and alpine troughs. Requires virtually no maintenance once established, making it excellent for busy gardeners or drought-prone regions. [source]

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Pollinator Support

Wildlife

Late-season pink flowers attract bees and other pollinators when other food sources are scarce. Provides nectar in fall months. [source]

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Green Roof & Living Wall Applications

Household

Shallow root system and extreme drought tolerance make Garnet Dome suitable for green roofs, living walls, and other challenging vertical growing conditions. [source]

Harvest Tips

This is a ornamental succulent, not harvested for food. Deadheading flowers is optional; leaving them provides late-season interest. Propagate anytime by removing individual leaves or short stem cuttings and allowing them to callus before planting in gritty medium.

Fun Facts

  • 🌱 Sedum foliage intensifies to deeper burgundy-garnet colors during cool fall and spring temperatures; heat and long days cause lighter coloring
  • 🌱 Sedums are among the most successful plants for xeriscaping and water-restricted landscapes, surviving on 6-12 inches of annual rainfall once established
  • 🌱 Unlike many succulents, Garnet Dome is fully winter-hardy to zone 4, making it one of the hardiest ornamental sedums for northern gardens

Gardening Terms

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

Cultivar Deadhead Full Sun Perennial
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