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Gunnera Manicata

Gunnera manicata

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Gunnera manicata is a giant herbaceous perennial known for its enormous, deeply lobed leaves that can reach up to 10 feet in diameter, making it one of the largest leafed plants in temperate climates. It thrives in wet, boggy conditions near water features and is prized as a dramatic architectural specimen in large garden settings. The plant produces distinctive cone-like flower spikes and requires ample space and moisture to reach its full impressive size.

Common Problems

Select the problem your Gunnera Manicata is experiencing to get a treatment guide.

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Yellow Leaveschevron_right

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Wiltingchevron_right

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Underwateringchevron_right

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Slow Growthchevron_right

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Brown Spotschevron_right

Care Guide

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Light

Full sun to partial shade; at least 4–6 hours of direct sunlight daily for optimal growth and leaf development.

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Water

Consistently moist to wet soil; plant prefers boggy, waterlogged conditions and shallow water margins. Keep soil saturated during growing season; reduce moisture slightly in winter dormancy.

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Soil

Rich, organic, moisture-retentive soil with excellent drainage to prevent stagnant water. Amend with compost and peat moss; pH 5.5–7.0 preferred.

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Fertiliser

Apply balanced fertilizer (10–10–10) monthly during growing season (spring through early autumn). Use slow-release granules or liquid feed every 4–6 weeks for vigorous growth.

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Temperature

Prefers cool to moderate temperatures between 50–70°F (10–21°C). Tolerates cooler winters; new growth emerges in spring after dormancy.

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Humidity

Requires high humidity and constant moisture; position near water features or in boggy areas. Mist foliage during dry spells to maintain humidity and prevent leaf damage.

Toxicity

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No known toxicity to humans, cats, or dogs. All parts are generally safe, though large leaves may cause mechanical injury if mishandled.

Common Diseases

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Common Pests

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Seasonal Care

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Resume regular watering and feeding as growth picks up.

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Peak growing season. Water and feed regularly.

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Reduce watering as growth slows. Stop heavy feeding.

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Minimal watering and feeding. Protect from frost if needed.