Achillea ptarmica The Pearl

Achillea ptarmica ‘The Pearl’

Why Buy Me?

• Masses of double, pearl-white pompon flowers
• Exceptionally long flowering season
• Excellent for pollinators and cut flower arrangements

Growing Conditions

Light:
Full sun to light partial shade. Performs best with at least 6 hours of direct sunlight daily, producing the strongest stems and most abundant flowering. In hotter regions, light afternoon shade is tolerated.

Soil:
Moist but well-drained soil. Thrives in fertile loam but adapts well to a range of soil types, including clay and sandy soils, provided drainage is adequate. Prefers neutral to slightly alkaline conditions.

Exposure:
Suitable for both sheltered and moderately exposed positions. Very hardy, making it reliable in most garden situations.

Drought Tolerance:
Moderate. More moisture-loving than many other Achilleas and benefits from regular watering during prolonged dry periods, especially in lighter soils.

Cultivation & Care

Planting Time:
Plant in spring or autumn when soil conditions are workable and temperatures are mild. Autumn planting allows roots to establish before the following growing season.

Spacing:
Space 45–60 cm (18–24 inches) apart. Typically grows 60–90 cm (24–36 inches) tall and 45–60 cm (18–24 inches) wide, forming upright clumps.

Watering & Fertilization:
Water regularly during establishment and during extended dry spells. Keep soil evenly moist but not waterlogged. Apply a balanced fertiliser or incorporate compost in spring if growing in poor soil.

Mulching & Pruning:
Apply organic mulch in spring to conserve moisture and suppress weeds. Deadhead spent flowers to encourage continued blooming. Cut stems back after flowering to maintain a tidy appearance and encourage fresh growth. Reduce old stems to ground level in late autumn or early spring.

Propagation:
Easily propagated by division every 2–3 years in spring or autumn to maintain vigour and prevent overcrowding. Can also be grown from seed or propagated by basal cuttings.

Seasonal Interest

Spring:
Fresh green, lance-shaped foliage emerges, forming neat clumps that quickly fill out borders.

Summer:
From early summer through late summer (June to September), dense clusters of double white flowers resembling tiny pearls appear on sturdy stems. The blooms are excellent for cutting and attract numerous pollinators.

Autumn:
Flowering may continue into early autumn if regularly deadheaded. Foliage remains attractive until colder weather arrives.

Winter:
Herbaceous perennial that dies back in winter. Seed heads and stems may be left standing for additional texture before cutting back in late winter.

Wildlife & Garden Use

Wildlife:
A valuable nectar source for bees, hoverflies, butterflies, and other beneficial insects. Generally resistant to deer and rabbits.

Garden Use:
Ideal for cottage gardens, mixed herbaceous borders, wildlife gardens, naturalistic plantings, and cutting gardens. Its bright white flowers bring light and contrast to summer displays and combine well with both pastel and vibrant planting schemes.

Companion Plants:
Combines beautifully with Lavender, Salvia, Echinacea, Nepeta, Geranium, Phlox, Delphinium, ornamental grasses, and Roses. The crisp white blooms complement virtually any flower colour and help unify mixed borders.

Transform your home and garden with Achillea ptarmica ‘The Pearl’, a timeless perennial that delivers months of elegant white blooms and valuable wildlife benefits. Order online now for quick and easy shopping, or visit your local Thompson's Branch to see it in person and receive expert advice.