Tuber ladder fern
Also known as:
Tuber sword fern
Regional Pest Management Plan (RPMP) status
- National Pest Plant Accord Species
- Whole region — Sustained control
Tuft-forming fern. Rhizomes and stolons are erect to spreading, produce long runners and have hairy potato-like tubers. Fronds are < 120 x 7 cm, erect, evergreen and pinnate.
What you need to know
To help protect our environment:
- You must not breed, distribute, release or sell tuber ladder fern. As tuber ladder fern is a National Pest Plant Accord species, these restrictions apply within the Auckland region and across the whole of New Zealand.
- You must not plant tuber ladder fern within the Auckland region, unless you are transferring an existing plant on your land to another location within the boundaries of the same property.
- You must destroy any tuber ladder fern on land that you occupy if it has been planted in breach of the above rules and you are directed to do so by an authorised person.
Terrestrial, epiphytic or epilithic habitats, forest, rocky outcrops, coastal scrublands, wetland and riparian margins, roadsides, wasteland, urban areas.
Vegetative spread from tubers. Human-mediated dispersal through dumping of garden waste and deliberate plantings.
Impact on environment
Forms dense stands, suppressing native regeneration.
Follow up treated areas 3 times per year. Encourage natural regeneration of native plants or replant treated areas where possible after 2-3 treatments to establish dense ground cover and minimise reinvasion.
Method: Dig or pull out.
Plant parts requiring disposal: Tubers.
Disposal options: Remove to greenwaste or landfill if practical.
Biocontrol is currently not available for this species.
Community agrichemical control recommendations
Basic Growsafe certified: Foliar spray with 1g metsulfuron-methyl per 10L of water.
Caution: When using any herbicide or pesticide please read the label thoroughly to ensure that all instructions and safety requirements are followed.