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Sedum Forsterianum Oracle Potted Plant
Sedum Forsterianum Oracle Potted Plant - Image 2

Sedum Forsterianum Oracle Potted Plant

Starting at £3.99

Sedum forsterianum

‘Oracle’ is a tough, evergreen, mat-forming succulent known for its silvery-green foliage that gets a pink or red hue in winter and bright yellow, star-shaped flowers in summer. It is a popular, low-maintenance groundcover, especially for rock gardens and containers. 

Description and Features
  • Foliage: The plant forms a dense, low mat of thin, blue-green or grey-green, succulent leaves arranged in rosettes. In cooler months, the leaves can develop attractive red or pink edging, providing year-round interest.
  • Flowers: Bright clusters of star-shaped, yellow flowers bloom above the foliage in the summer (June-July), which are known to attract pollinators like hummingbirds and butterflies.
  • Habit: It has a ground-hugging, spreading habit, typically growing 4-8 inches tall and spreading up to 10-12 inches wide.
  • Hardiness: It is a hardy, drought-tolerant perennial suitable for USDA hardiness zones 4 to 10.
  • Uses: Due to its resilience and mat-forming habit, it is excellent for rockeries, green roofs, path edges, coastal gardens, and mixed containers. It is also deer and rabbit resistant. 

Supplied in 9 cm pots.

Useful Information

  • Use a shallow tray or pot to accommodate the fine root systems. For some varieties, cold stratification can help break seed dormancy and boost germination.
  • Stratification involves keeping seeds in a moist, cold environment—such as a refrigerator—for about 14 to 30 days before sowing. This simulates natural winter conditions the seeds would encounter outdoors.
  • Sedum seeds are extremely small, so they require a light-sensitive planting method. Do not bury them; surface-sow by scattering evenly over the prepared, moistened soil surface. Gently press the seeds into the soil with a flat object to ensure good seed-to-soil contact without covering them.
  • A fine layer of horticultural vermiculite can be added atop the seeds to maintain surface moisture while still letting light reach them. This top layer also helps suppress algae and reduces the risk of fungus gnats.
  • After sowing, water with a misting bottle or by bottom watering: place the tray in a shallow tray of water so the soil wicks moisture upward. Covering the tray with a clear plastic dome or plastic wrap helps maintain high humidity, which supports germination.
  • Post-sowing conditions should be carefully controlled to encourage germination, which typically occurs in about 14 to 21 days. Sedum seeds germinate best at warm conditions, ideally a steady 65–72°F during this period. Because the seeds are photoblastic (they need light to sprout), using a dedicated grow light is often the most reliable approach.
  • Position grow lights about 3–4 inches above the soil surface and run them for roughly 16 hours each day. Once seedlings appear, gradually remove the plastic cover to improve air circulation and reduce the risk of damping-off fungi. Keep the soil consistently moist, but allow the surface to dry slightly between waterings. The seedlings will stay quite small for the first six to eight weeks.
  • Before moving the young Sedum outdoors, they should be hardened off. This involves gradually increasing hardening time: start by placing the trays in a sheltered outdoor spot for 30 minutes to an hour, then lengthen exposure each day over a week.
  • Seedlings are ready for final planting once the frost risk has passed and they have developed several true leaves. Sedum prefers a full-sun location (at least six hours of direct light daily) and well-drained soil.
  • When transplanting, dig a hole large enough for the root ball and place the plant so the top of the roots sits level with the surrounding soil. Space taller, clumping varieties up to about two feet apart, while low-growing, creeping types should be spaced about six to twelve inches apart to allow for spreading.

Additional information

Amount

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