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Gunnera manicata (Gunnera, Giant Rhubarb)

Gunnera manicata (Gunnera, Giant Rhubarb)
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Type Herbaceous flower, Deciduous, Ground cover, Flowering
Form Ground-Hugging Rounded Clump, Architectural Form
Size Large Border / Screening Plant (1.8 to 3m height)
Colours Green Flowers (Spring), Medium green Foliage
Care Regular Maintenance Required
Hardiness Half hardy
Growth Slow Growing Plant
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Gunnera manicata Description

This impressive deciduous perennial will eventually produce huge displays of massive dark green lobed foliage, but you need plenty of space! Gunnera looks best planted near water in an informal semi natural setting, often being planted among with tree ferns and bamboo. Grows to 2m tall x 3m and spreads. This plant can become invassive. Not a plant for the faint hearted but well worth the effort if you have the space.


Gunnera manicata - Cultivation Notes

Gunnera requires a deep moist fertile soil, ideally near a water source such as a pond or stream. Plant in full / half sun and avoid very cold locations, as Gunnera has large tender growth points in winter . Cover crowns with straw mulch or cut back foliage in autumn to protect from frost and mulch again in spring to feed.


Strengths, Weaknesses & Design Usage


Strengths of Gunnera manicata:

  • Architectural plant – ideal as a ‘stand out’ plant
  • Attractive form or foliage for all year interest
  • Tolerates permanently wet soil
  • Tolerates heavy clay soils

Weaknesses of Gunnera manicata

  • Invasive/spreading root growth
  • Invasive top growth

Design & Plant Use for Gunnera manicata:

  • Winter/early spring flowering herbaceous plant for early colour and extended seasonal interest
If you like this plant you may also be interested in these:
architectural plants
plants and shrubs for very wet soil
plants for heavy clay soils

View all the plants listed in Genus Gunnera

View other ground cover plants with green flowers, or ground cover plants with medium green foliage


Common Missspellings: Gunera, Gunnira, Gunaria, Gunara

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