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Gunnera tinctoria
Chilean rhubarb
Gunnera tinctoria
Gunnera tinctoria, also known as Chilean rhubarb, is a large, striking perennial plant native to South America. It is characterized by its massive, rhubarb-like leaves that can reach several feet in diameter. The plant produces tall stalks with small, inconspicuous flowers, followed by spiky seed heads. It thrives in moist, acidic conditions and prefers full sun to partial shade. While the leaves are edible (after cooking), the plant is not traditionally used as a food source in most regions.
CategoryDetails
Plant TypePerennial plant
Duration to maturity3 months to harvest
Estimated Plant Lifespan20 years lifespan
Sun Requirements4-6 hours direct sunlight (Partial Sun)
Pollination

Method: wind

Watering Requirements

Method: top water

Frequency: keep constantly moist

Notes: Gunnera tinctoria requires consistently moist soil, especially during dry periods. Avoid letting the soil completely dry out.

Humidity Requirements

Level: high

Maintenance: Misting leaves regularly, especially during hot, dry weather

Care InstructionsProtect young plants from frost and strong winds. Regularly remove dead or damaged leaves to prevent disease.
Temperature Range

Min: -5°C

Max: 30°C

Alternative NamesGiant-rhubarb, Gunnera chilensis, Gunnera scabra, Panke tinctoria, Gunnera thyrsiflora
Primula vulgaris
Primrose
Primula vulgaris
Primroses prefer similar moist, slightly acidic conditions as Gunnera tinctoria and their smaller size contrasts beautifully with the Gunnera's large leaves, creating visual interest in a garden bed.
Lysichiton americanus
western skunk cabbage
Lysichiton americanus
Both Gunnera tinctoria and Lysichiton americanus thrive in similar boggy, wet conditions, creating a thriving wetland garden environment. Their different leaf shapes and colors complement each other.
Phragmites australis
common reed
Phragmites australis

Common reed is a vigorous grower that will outcompete Gunnera tinctoria for water and nutrients in a similar wetland habitat.

Aphids

Aphids are small, sap-sucking insects that can infest Gunnera tinctoria, causing leaf curling, yellowing, and stunted growth. They excrete honeydew, which can lead to the growth of sooty mold.

Slugs and Snails

Slugs and snails can cause significant damage to the large leaves of Gunnera tinctoria, leaving holes and slime trails. They are particularly problematic in humid environments.

Steps:

    • Dig up a mature Gunnera tinctoria plant in early spring or late autumn.
    • Carefully separate the rhizomes, ensuring each section has healthy roots and growth buds.
    • Replant the divisions in moist, well-prepared soil, spacing them appropriately.
    • Water well after planting.

Neem oil

Effective natural insecticide to control aphids and other pests.

Diatomaceous earth

A natural pesticide that can help control slugs and snails.