Overview
Gunnera magellanica is a plant with a herbaceous perennial, rhizomatous habit in the genus Gunnera, part of the Gunneraceae family, with large, lobed, green foliage. Gunnera magellanica grows best in full sun and partial shade, and tolerates loam and sand soils and acid and neutral pH. Its UK hardiness is rated H4. Suggested uses include architectural specimens and waterside planting.
About
Gunnera magellanica is a perennial rhizomatous dioeceous herb native to Chile, Argentina and the Falkland Islands, and Andean areas of Peru and Ecuador. In the southern part of its range, it grows in damper parts of the Magellanic subpolar forests and Valdivian temperate forests, and shrub formations on Tierra del Fuego, with an altitudinal range from sea level to 1,500 m (4,920 ft). Since G. magellanica can form symbiosis with mycorrhizal fungi and cyanobacteria, thereby enriching the soil with nutrients, the species has been proposed to facilitate the establishment of other plant species. In the garden it prefers full sun and partial shade and loam and sand soil. In UK gardens it is hardy through an average UK winter (RHS H4). Suggested uses include architectural specimens and waterside planting. It tolerates acid and neutral soils, moist, wet conditions and south-facing and west-facing aspects. Plant in well-drained soil in a suitable position. Water during establishment.
Wikipedia contributors, CC BY-SA 4.0 — Gunnera magellanica
About the genus
Gunnera is the sole genus of herbaceous flowering plants in the family Gunneraceae, which contains 63 species. Some species in this genus, namely those in the subgenus Panke, have extremely large leaves. Species in the genus are variously native to Latin America, Australia, New Zealand, Papuasia, Hawaii, insular Southeast Asia, eastern Africa, and Madagascar.
Wikipedia contributors, "Gunnera", CC BY-SA 4.0 — Gunnera
Growing conditions
Best soil and position for Gunnera
- Sunlight
- Full sun, Partial shade
- Soil type
- Loam, Sand
- Soil pH
- Acid, Neutral
- Soil moisture
- Moist, Wet
- Aspect
- South-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H4
Plant details
Gunnera magellanica size, habit and characteristics
- Habit
- Herbaceous perennial, Rhizomatous
- Foliage
- Large, Lobed, Green
- Suggested uses
- Architectural specimens, Waterside planting
Care notes
Pruning and caring for Gunnera magellanica
- Propagation
- Please see cultivation notes
- Pest resistance
- Susceptible to snails and slugs
Frequently asked questions
Where is the best place to plant Gunnera magellanica?
Gunnera magellanica prefers full sun and partial shade. It suits sheltered positions.
What soil does Gunnera magellanica need?
Gunnera magellanica grows best in loam and sand soil. It prefers acid and neutral soil. Aim for soil that stays moist to wet.
Is Gunnera magellanica hardy in the UK?
Gunnera magellanica has an RHS hardiness rating of H4, meaning it is hardy through an average UK winter, tolerating -10 to -5°C.
How do I propagate Gunnera magellanica?
Please see cultivation notes.
More in the Gunnera genus
- Gunnera chilensisGiant Rhubarb

- Gunnera hamiltoniiHamilton’s gunnera

- Gunnera manicatagiant rhubarb

- Gunnera prorepens var. aurea
- Gunnera arenaria