Blechnum neohollandicum

This fern forms dense carpets of growth up to 1m across due to long creeping rhizomes.

Produces fronds that are pink or pinkish-green when juvenile, maturing to dark green. These fronds rise vertically from the black, scaled rhizome. Both the fronds and stipe are covered in small bumps, giving them a rough texture.

Readily cultivated, Blechnum neohollandicum grows in shade or sun on acidic soils. Drainage needs to be sufficient to prevent waterlogging.

Surprisingly, ferns are not that fussy about soil as long as the small roots (rhizoids) are able to spread through an organic layer. Most species preferring good drainage. Watering is usually necessary during dry summer months; a good mulch will help keep moisture around the roots.

Always choose healthy, well-grown plants and plant after autumn rains. Before planting, ensure the root ball is saturated and remove the planter pot with minimal root disturbance. Trim any broken roots and plant at the same level as in the container. Dig a hole twice the diameter of the root ball, press in and water once planted. Make sure plants are watered well until established if planting in a drier period. Plant with some general slow-release fertiliser. Plant approximately 50cm apart. Containers can be planted at any time of the year, as they require frequent watering.

Requires well-drained soil with plenty of organic matter. Mulching helps conserve moisture and suppress weeds. Organic materials, such as sawdust and bark, contribute to soil structure as they decompose. Keep mulch away from plant stems.

The root ball sometimes dries out despite the surrounding soil being moist. When this occurs, directly water down the plant stem to saturate the root ball. The first summer and autumn after planting are critical for young plants, so water thoroughly during dry periods. When grown in full sun and exposed conditions, the fronds can become windburnt.

Requires no major maintenance. Remove old fronds when they become unsightly.

Native Identification Trail

Most likely extinct in New Zealand forests. Historically, it has been recorded in at least one site near Waiomio, Kawakawa, in Northland. In this area, the species grew in coastal scrub and under rawirinui (Kunzea robusta) forest.