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Giant Rhubarb Care

Gunnera Tinctoria

Other names: Chilean Rhubarb

Giant Rhubarb main
Giant Rhubarb 0
Giant Rhubarb 1
What is the plant

Gunnera tinctoria, known as giant rhubarb or Chilean rhubarb, is a flowering plant species native to southern Chile and neighbouring zones in Argentina.

Invasive on the west coast of Ireland.

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Humidity

Humidity

Normal

Lighting

Lighting

Part Sun

Temperature

Temperature

18°C - 28°C

Hardiness zone

Hardiness zone

9 - 11

Difficulty

Difficulty

Medium

Hibernation

Hibernation

Cold Period

How to Care for the Plant

  • Water

    Water

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    If grown in the right environment, with moist soil watering is rarely needed.

  • Pruning

    Pruning

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    We recommend cutting the flower spikes close to their base, with a gardening knife or pruning saw, in July or August.”

  • Fertilizer

    Fertilizer

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    That said, rhubarb is a heavy feeder, so apply compost annually or an all-purpose fertilizer according to the manufacturer's instructions early in the spring. If you live in a warmer region, mulching around the base of the plant will help keep the soil cool and moist. Keep the soil moist but not sodden.

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  • Soil

    Soil

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    When planting Riverside Giant rhubarb crowns, choose an area of full sun to partial shade with deep, rich, and moist but well-draining soil in the spring. Dig a hole that is wider than the crown and deep enough to that the eyes are 2-4 inches (5-10 cm.)

  • Temperature

    Temperature

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    Rhubarb is a perennial that loses its leaves in the fall and then requires a winter chilling period to produce in the spring. Rhubarb can be grown in USDA zones 3-7 and tolerates temps as low as -40 F. (-40 C.).

  • Container

    Container

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    Yes indeed, it is possible to grow rhubarb plants in containers.

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  • Additional

    Additional

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    Although Giant rhubarb is not poisonous to humans, the leaf blade and stem bear stiff bristles which can scratch skin. Brazilian giant-rhubarb is very similar to giant-rhubarb with leaves reaching over 2 m across, leaf stalks with reddish bristles and spines and the inflorescence up to 1.2 m tall. Giant-rhubarb is spread throughout lowland areas especially in south-west England.

  • Popularity

    Popularity

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    154 people already have this plant 42 people have added this plant to their wishlists

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