Discover the Stunning Giant Gunnera

Gunnera: The Majestic Giant Rhubarb

The Gunnera, often referred to as the Giant Rhubarb, is a striking ornamental plant known for its enormous leaves and tropical appearance. This plant is not related to culinary rhubarb but earns its nickname from its large, lobed leaves that resemble rhubarb foliage. Native to South America and parts of New Zealand, this plant thrives in temperate, moisture-rich environments and is admired for its prehistoric, almost primeval form. Its coarse texture, prominent leaf veins, and towering stature make it a bold presence in any landscape.

Varieties like Gunnera manicata and Gunnera tinctoria create an impressive focal point in gardens and water features. These species can grow leaves spanning up to 2 meters wide and reach a height of over 2.5 meters in favorable conditions. They are frequently used in botanical gardens and large-scale landscape designs to evoke a dramatic, jungle-like effect.

How to Grow and Care for Gunnera

Thriving in wet, well-drained soils, the Gunnera plant is perfect for ponds, stream edges, or damp garden areas. These plants prefer full sun to partial shade and benefit from sheltered locations that protect their large leaves from strong wind. While tolerant of brief dry periods once mature, young plants require consistent moisture to establish. Rich, humus-laden soil helps support vigorous leaf growth and strong root development.

Ensure protection in colder climates by mulching the base during winter. In areas with frost, the crown must be insulated—gardeners often fold and tie the plant's own leaves over the crown, then add straw or fleece for extra insulation. With proper care, this giant plant becomes a showstopper in any landscape. Annual division of older clumps may be necessary to rejuvenate growth and prevent overcrowding.

The Benefits of Planting Gunnera

Not only does the Gunnera manicata provide dramatic aesthetics, but it also offers shade and soil stability in wet areas. Its expansive canopy suppresses weed growth while stabilizing moist banks and stream edges, helping to reduce erosion. In wildlife-friendly gardens, the dense foliage creates shelter for amphibians, birds, and insects, contributing to a rich and varied ecosystem.

Its towering leaves create a natural, lush atmosphere, attracting wildlife and enhancing the biodiversity of your garden. In bog gardens or large woodland borders, its visual impact cannot be overstated. It combines well with ferns, hostas, and moisture-loving wildflowers to evoke a layered, textural planting scheme that feels both untamed and curated.

Why Choose Gunnera for Your Garden

If you're looking for a statement plant, the Gunnera manicata is the perfect choice. Its sheer scale and unique silhouette make it an excellent selection for public gardens, estates, or large private landscapes. Despite its impressive size, it requires relatively low maintenance once established, provided its moisture and temperature needs are met.

Whether used as a backdrop or centerpiece, this giant ornamental plant adds unparalleled charm and character to any outdoor space. It transforms ordinary garden zones into immersive green sanctuaries, especially when placed near water or alongside woodland paths. With its prehistoric elegance and ecological benefits, it remains one of the most captivating large perennials available to temperate gardeners.

Cultivation Tips for Gunnera

• Choose a consistently moist planting location with rich, organic soil

• Plant in full sun or partial shade with wind protection

• Water regularly during dry spells, especially in the first two years

• Mulch the crown in winter to protect from frost damage

• Divide mature clumps every few years to maintain vigor