One of the largest herbaceous perennials on earth. Dinosaur sized leaves are 6-10 feet across (1.8-2.4 m)
AGM Award. Can be grown in containers that are moved inside to a cool, frost free location where they will go dormant in the winter (like an unheated garage).
Gunnera manicata, commonly known as Giant Rhubarb or Dinosaur Food, is a remarkable and imposing plant species that captures the imagination of all who encounter it. Native to the damp and lush regions of South America, particularly in Brazil and Colombia, this plant has gained popularity as an ornamental and exotic addition to gardens in various parts of the world.
As the name suggests, Giant Rhubarb lives up to its reputation as one of the largest herbaceous plants on Earth. It can grow up to an astonishing height of 6 to 15 feet (1.8 to 4.5 meters) and boast leaves that can span 6 to 10 feet (1.8 to 2.4 meters) in diameter. The sight of its enormous, deeply lobed, and serrated leaves can be awe-inspiring, making it a focal point in any garden or landscape.
One of the most captivating features of Giant Rhubarb is its prehistoric appearance, which has led to its nickname, "Dinosaur Food." The plant's primeval allure can transport observers to a time when dinosaurs roamed the Earth, adding a sense of wonder and intrigue to any botanical setting.
Gunnera manicata thrives in moist and semi-aquatic environments, often found along riverbanks, streambeds, and in damp forests. It prefers rich, well-draining soil and partial shade, creating a microclimate that mimics its native habitat. The plant's large leaves are not only visually striking but also serve a practical purpose, providing shade to the soil beneath, regulating temperature, and preventing excessive evaporation.
In addition to its aesthetic appeal, Giant Rhubarb plays a vital ecological role in its native ecosystem. The plant's large leaves create a microhabitat for small animals and insects, and its flowering spikes produce seeds that contribute to the biodiversity of the region.
Gunnera manicata has undoubtedly captured the fascination of plant enthusiasts and nature lovers alike, with its gigantic proportions, prehistoric allure, and ecological significance. Whether admired in botanical gardens or flourishing in its native habitats, the Giant Rhubarb remains a captivating and iconic representation of the natural world's diversity and splendor.
Botanical Name: Gunnera manicata
Common Name: Giant Rhubarb, Dinosaur Food, Brazilian Giant Rhubarb
Type: Herbaceous Perennial
Flower Color: Orange/Reddish/Green
Flowering Season: Summer, Fall
Plant Height: 6-15 ft (1.8 to 4.5 m)
Plant Spread: 10-12 ft (3-3.6 m)
Light Requirements: Partial Shade. Full Sun in areas with cool summers.
Water Requirements: Moist. Soil must never be allowed to dry out. Suitable for bogs, water gardens, rain gardens.
Soil Requirements: Well-drained. Average. Prefers fertile, humus-rich soil.
USDA Zones: 6-10
AHS Heat Zones: 12-7
