Osmunda regalis

Osmunda regalis

Royal fern

  • Botanical name: Osmunda regalis
  • Common name: Royal fern
  • Family: Osmundaceae
  • Plant Type: Bog, Marginal, Perennial, Pond, Deciduous

Royal fern, Osmunda regalis, is a stunning, giant fern that really lives up to its regal name. In spring, huge, bright green fronds unfurl and filter the sunlight. In autumn, they turn bronze before dying back. A deciduous fern, it forms a natural, rounded shape and looks fantastic planted near a pond or stream, where its feathery fronds will be reflected in the water.


Grow Osmunda regalis in damp, preferably acid soil, with other moisture-loving, large foliage plants such as rodgersia and gunnera.

How to grow Osmunda regalis

  • Plant size

    2m height

    4m spread

  • Aspect

    North facing, south facing, east facing, west facing

  • Sun exposure: Partial shade
  • Hardiness: Hardy
  • Soil type: Acidic / boggy / clay / heavy / moist

Plant calendar

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Do not Plant in January

Do not Plant in February

Do not Plant in March

Do not Plant in April

Do Plant in May

Do Plant in June

Do Plant in July

Do Plant in August

Do Plant in September

Do not Plant in October

Do not Plant in November

Do not Plant in December


Do not Divide in January

Do not Divide in February

Do Divide in March

Do not Divide in April

Do not Divide in May

Do not Divide in June

Do not Divide in July

Do not Divide in August

Do Divide in September

Do Divide in October

Do Divide in November

Do not Divide in December

Osmunda regalis and wildlife

Osmunda regalis has no particular known value to wildlife in the UK.

Is Osmunda regalis poisonous?

Osmunda regalis has no toxic effects reported.

No reported toxicity to:

No reported toxicity to Birds

No reported toxicity to Cats

No reported toxicity to Dogs

No reported toxicity to Horses

No reported toxicity to Livestock

No reported toxicity to People

Plants that go well with Osmunda regalis

Lythrum salicaria

Lythrum salicaria

Purple loosestrife