Astelia 'Silver Spear' (Kakaha)

How to grow Astelia 'Silver Spear'

To grow Astelia 'Silver Spear' successfully, select a location with well-draining soil and partial to full sun exposure. A well-drained soil is essential for success; therefore, avoid areas prone to waterlogging and those with excessive moisture. Water the plant regularly while it is establishing, then reduce the frequency as it becomes more drought-tolerant. Mulch around the base helps retain moisture and suppress weeds, but avoid piling it directly against the crown to prevent rot. Apply a slow-release fertiliser in spring to encourage healthy growth.

Astelia 'Silver Spear' (Kakaha) size, spacing, and growth rate

Astelia 'Silver Spear' (Kakaha) typically reaches about 1.5 m tall and 1.5 m wide in suitable conditions. Allow about 1.5 m between centres for separate specimens, leaving room for mature foliage and good airflow. It has a moderate growth rate under suitable conditions. Use the mature spread as a guide when planting beside paths, walls, or neighbouring plants. Containers can limit overall size, so choose a pot that supports healthy root development. Check the developing plant regularly and adjust surrounding planting as needed.

Astelia 'Silver Spear' care tips

Astelia 'Silver Spear' thrives in well-drained soil and prefers partial shade to full sun. In coastal regions, it tolerates full sun well and handles wind exposure with ease. The soil should be rich in organic matter but free-draining, as Astelia dislikes sitting in waterlogged conditions. When planting, ensure the crown sits just above soil level to reduce the risk of rot. Water the plant regularly while it is establishing, then reduce watering as it becomes more drought-tolerant. A yearly application of slow-release fertiliser in spring will encourage healthy growth and intense foliage colour. Apply mulch around the base to retain soil moisture and suppress weeds, but avoid covering the crown. It is generally low-maintenance, with few pest or disease issues. Remove any damaged or dead leaves as needed. It is moderately frost-hardy and ideal for modern gardens, coastal landscapes, and large containers, where its sculptural form can make a lasting impression.

Landscaping uses for Astelia 'Silver Spear' (Kakaha)

Use Astelia 'Silver Spear' (Kakaha) for textured borders, repeated group planting, and natural garden designs. Position it where its natural form can be appreciated and allow sufficient space for mature growth. Combine it with plants that enjoy similar light, soil, and watering conditions for a practical and cohesive display. Repeated planting adds rhythm, while a single specimen can create a distinctive focal point. Place it near contrasting foliage so its shape stands out clearly in the planting.

Why buy Astelia 'Silver Spear' (Kakaha) from The Plant Company?

Buy Astelia 'Silver Spear' (Kakaha) from The Plant Company, NZ's most trusted plant nursery. Choose from our extensive range and get practical advice to help match your plants to your local conditions. Our team makes online ordering straightforward, with careful packing and delivery throughout New Zealand. Whether you are planning textured borders or refreshing an established display, we can help you select suitable plants. Explore the available options and take the next step towards a beautiful, rewarding planting project.