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 4.0Gunnera 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 4.0Gunnera

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

Browse all Gunnera