Dicksonia squarrosa (Rough Tree Fern, Ponga)

How to grow Dicksonia squarrosa in NZ

To grow Dicksonia squarrosa (Rough Tree Fern or Ponga) in New Zealand, choose a shaded or semi-shaded spot with protection from wind and direct afternoon sun. Plant in moist, well-drained soil rich in organic matter, and keep the base and trunk damp—watering the trunk during dry spells helps maintain health. Mulch around the base to retain moisture and prevent the roots from drying out. This native fern thrives in forest-like conditions and requires minimal care once established.

Dicksonia squarrosa care tips

Plant in a shady, sheltered spot with moist, free draining soil enriched with organic matter. Keep the trunk and root zone consistently damp, especially during dry periods. Watering the trunk directly helps maintain health. Apply mulch each year to retain moisture and suppress weeds. Avoid exposure to strong winds or direct sun, which can scorch the fronds. Prune only to remove old or damaged fronds at the base. This fern thrives in cool, humid environments.

Tree size, spacing, and growth rate

Dicksonia squarrosa typically grows 3 to 6 metres tall with a spread of 2 to 3 metres. It has a slow growth rate, often adding just 5 to 10 centimetres of trunk height per year. Space plants at least 1.5 to 2 metres apart to allow room for the fronds to spread and to create a natural, layered forest effect.

Why buy Dicksonia squarrosa from The Plant Company?

Buy Dicksonia squarrosa from The Plant Company for premium, NZ-grown tree ferns that thrive in local gardens. Their plants are carefully grown, expertly packed, and delivered nationwide. You’ll also receive helpful planting advice and enjoy free delivery on qualifying orders.