A clump-forming perennial with upright stems of grey-green, fleshy leaves. Dense clusters of starry white flowers, flushing soft pink in late summer. Height and Spread 45cm. Flowers August to September. Full sun. Hardy. Attracts butterflies.
Hylotelephium spectabile ‘Iceberg’ is a compact, reliable perennial admired for its clean, upright habit and striking domes of starry white flowers that appear from late summer into autumn. With its low-maintenance nature and pollinator-friendly blooms, Hylotelephium spectabile ‘Iceberg’ makes an excellent choice for borders, gravel gardens, wildlife-friendly spaces, and containers. Follow this comprehensive guide to help your Hylotelephium spectabile ‘Iceberg’ thrive and perform beautifully year after year.
PLANTING and AFTERCARE GUIDE
Best Planting Time
Spring: The ideal time to plant Hylotelephium spectabile ‘Iceberg’ is spring, when the soil begins to warm. Planting at this time encourages strong root development ahead of its flowering season.
Autumn: Alternatively, you can plant in early autumn. This gives the plant time to settle before its dormant period and promotes vigorous growth the following year.
Site Selection
Sunlight: Hylotelephium spectabile ‘Iceberg’ thrives in full sun, producing the strongest stems and best flowers when it receives abundant light. Although tolerant of light shade, fuller sun promotes more compact, sturdy growth.
Soil: This plant prefers well-drained soil. Hylotelephium spectabile ‘Iceberg’ does not tolerate waterlogged conditions, so ensure the soil drains freely. Adding gravel or grit can improve drainage in heavier soils.
Planting Instructions
Prepare the Hole: Dig a hole twice the width of the root ball but no deeper. This allows Hylotelephium spectabile ‘Iceberg’ to anchor firmly without sinking.
Soil Preparation: Mix compost or organic matter into the soil to improve structure and fertility.
Planting: Position the plant so that the crown sits level with the surrounding soil. Backfill gently and firm the soil to remove air pockets.
Watering After Planting: Water thoroughly to help the soil settle around the roots. Ensure the area drains well and avoid saturating the soil.
Watering Requirements
Growing Season: Once established, Hylotelephium spectabile ‘Iceberg’ is drought-tolerant. Water during prolonged dry spells, but allow the soil to dry between waterings. Overwatering should be avoided.
Dormant Season: Reduce watering significantly during winter dormancy. Only water if the soil becomes very dry.
Feeding
Spring: Apply a balanced fertiliser in early spring to support fresh new growth.
Mid-Summer: A light mid-summer feed can help maintain strong stems and vibrant flower heads.
Pruning
Deadheading: Remove spent flower heads to maintain a tidy appearance, although leaving them for winter interest is also an option.
Autumn/Winter Cutback: After flowering has finished and growth begins to die back, cut your Hylotelephium to ground level. This encourages healthy regrowth in spring.
Mulching
Spring: Apply mulch around the plant in spring to retain moisture, suppress weeds, and help keep an even soil temperature.
Winter: A winter mulch helps protect the crown and prevents frost-related movement of the soil.
Supporting the Plant
Typically, Hylotelephium spectabile ‘Iceberg’ forms sturdy stems that rarely need support. In particularly exposed sites, light staking may help prevent flopping during flowering.
Final Tips
Hylotelephium spectabile ‘Iceberg’ is a wonderfully low-maintenance perennial that brings structure, texture, and late-season colour to any garden. By planting it in a sunny position with well-drained soil and following this simple care routine, your Hylotelephium spectabile ‘Iceberg’ will reward you with long-lasting blooms, strong growth, and reliable performance year after year.
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