Giant Rhubarb Gunnera manicata
Giant Rhubarb (Gunnera manicata) is a marginal aquatic for UK ponds and water gardens. It prefers sun to light shade and grows to about 2–2.5 m. Match planting depth and give enough sun for flowers and oxygenators.
- Sun: Sun to light shade
- Soil: Aquatic basket compost / loam (no rich peat fertiliser dumps)
- Watering: Aquatic — keep crowns at correct water depth
- Harvest: Enjoy as an ornamental display plant.
- Difficulty: Moderate
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