Astelia chathamica

Astelia chathamica, also known as Silver Spear, is a bold, evergreen perennial native to New Zealand, admired for its large, arching leaves with a striking silvery sheen. The metallic foliage adds a sculptural quality to the garden, while small, hidden flowers may appear in Spring, followed by bright orange berries on female plants.

Well-suited to coastal gardens, modern landscapes, and native plantings, it thrives in part shade to full sun with moist, free-draining soil. Protect from harsh frost and strong winds to maintain leaf quality. Allow at least 1m spacing for its broad, spreading form.

Reaches up to 1.2m tall and 1.5m wide at full maturity, forming a dramatic, fountain-like clump.

Trimming: Remove any damaged, dead, or discoloured leaves at the base to keep the plant looking tidy. In late winter or early spring, tidy up by trimming back any spent or frost-damaged foliage.

Deadheading: Not required, as the flowers are inconspicuous and do not need removal.

Fertilising: Apply a slow-release fertiliser in spring to support strong, silvery or metallic foliage. Supplement with a liquid feed during the growing season if needed, especially in containers.

Watering: Water regularly during establishment and during extended dry periods. Once established, Astelia is moderately drought-tolerant but prefers evenly moist, well-drained soil. Avoid waterlogging.

Pest Control: Generally pest-free, though mealybugs may appear, especially in sheltered or indoor settings. Remove manually or treat with insecticidal soap.

Disease Management: Can be prone to root rot in poorly drained soils. Ensure good drainage and avoid overwatering, especially in humid or shaded locations. Remove any affected leaves promptly.