Blechnum vulcanicum (Korokio)

How to grow Blechnum vulcanicum in NZ

Blechnum vulcanicum grows best in part shade to full shade and prefers moist, humus rich, free draining soil. Choose a sheltered site protected from strong winds and harsh afternoon sun. Keep the soil consistently damp during establishment and mulch generously to retain moisture. This fern thrives in cool, shaded NZ environments including bush inspired gardens, damp banks, and sheltered understories.

Blechnum vulcanicum care tips

Blechnum vulcanicum is low maintenance when provided with moisture and shade. Water regularly during dry spells to maintain healthy fronds. Apply a thick layer of mulch each year to support soil health and moisture retention. Remove older or damaged fronds to keep the plant tidy. A gentle feed with organic fertiliser in spring encourages lush new growth. Protect younger plants from heavy frost until well established.

Blechnum vulcanicum size spacing and growth rate

Blechnum vulcanicum typically grows sixty to ninety centimetres tall and around one metre wide. Space plants about eighty centimetres apart when planting in groups to allow full frond extension. Growth is moderate, developing into a strong, upright form as it matures. Once established, it becomes a durable and reliable feature fern that offers bold structure and year round interest in shaded garden areas.

Landscaping uses for Blechnum vulcanicum

Blechnum vulcanicum is ideal for native landscapes, shaded borders, fern gardens, and naturalistic woodland settings. Its upright fronds create bold vertical accents that contrast beautifully with softer ground ferns and woodland perennials. Plant it beneath trees, along shaded pathways, or near water features for a forest like atmosphere. It pairs well with carex, astelia, and other NZ natives for layered, textural planting schemes.

Why buy Blechnum vulcanicum from The Plant Company?

Blechnum vulcanicum from The Plant Company is grown with care to ensure strong roots, vigorous fronds, and reliable performance in NZ conditions. Each plant is selected for its resilience and quality so customers can plant with confidence. The Plant Company is NZs most trusted plant nursery and offers expert guidance to support success in shaded plantings. Choosing this fern guarantees premium stock with enduring native beauty.