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Product Description
Bring dramatic foliage and bold blooms to your garden with Gunnera Manicata, a striking flowering plant known for its massive leaves and unique tropical appearance. Perfect for shaded areas, borders, and water-edge planting, this hardy plant is ideal for home gardeners seeking a bold and unusual display.
Produces large, impressive leaves and vibrant flowers
Shade-tolerant, ideal for shaded garden areas
Heirloom seeds, non-GMO, suitable for sustainable gardening
Perfect for borders, water features, and garden beds
Low-maintenance once established
Seed Type: Perennial flowering plant
Variety: Gunnera Manicata
Plant Height: 4–6 feet (leaf spread can reach 6–8 feet)
Bloom Season: Summer
Sunlight: Partial to full shade
Soil Requirement: Well-draining soil
Watering: Moderate; maintain even moisture
Soil Preparation: Use well-draining soil in shaded or partially shaded areas.
Sowing: Sow seeds lightly on the soil surface and press gently; cover very lightly.
Spacing: Space seedlings 3–4 feet apart to accommodate mature leaf spread.
Watering: Keep soil consistently moist during germination and early growth.
Light Requirement: Partial to full shade promotes strong growth and large leaves.
Germination Time: 20–40 days under moderate conditions (65–75°F).
Transplanting: Transplant seedlings carefully when 3–4 inches tall to permanent garden locations.
Maintenance: Remove faded flowers and leaves to maintain plant health; minimal pruning needed.

Life Cycle
Perennial giant foliage plant
Planting Season
Warm season
Growth Habit
Massive clumping
Flavor Profile
Not applicable
Plant Characteristics
Enormous leaves, bold form
Use
Shade landscapes & water edges
Growing Conditions
Rich wet soils
Harvest Advantages
Dramatic foliage impact
Plant Resistance
Shade tolerant
Gunnera manicata
Seed Names
Gunnera Seeds
Seed Type
Heirloom open-pollinated
Gunnera manicata, commonly known as Giant Rhubarb, is a spectacular architectural plant prized for its enormous, tropical-looking leaves and impressive flower spikes. Thriving in moist, shaded locations, this heirloom perennial is ideal for woodland gardens, pond edges, and statement landscape areas. Bold, dramatic, and long-lived, gunnera transforms home gardens into lush, jungle-like displays.
Light Requirement
Partial shade–full shade
Planting Depth
Surface sow
Sowing Method
Indoor start / trays
Plant Spacing
6–10 feet
Days to Maturity
365–730 days
Soil Preparation
Cold stratification
Hardiness Zones
USDA 7–10
Water Needs
High moisture
Planting Season
Spring / early summer
Seed Count
Recommended Coverage
100
Up to 40 sq ft
500
Up to 200 sq ft
1000
Up to 400 sq ft