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Helianthus decapetalus Double Whammy

Common name: Sunflower

Double the petals, double the beauty - You will bring this impressive sunflower in your garden.

-10 to -15°C
Good Cut Flowers
Good for Pollinators

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9cm Pots
3 for £22.00
just £7.33 each
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Impactful, bold, bright, and long flowering, Helianthus Double Whammy is a hardy sunflower certain to bring radiant sunshine into your summer and autumn garden, whatever the weather. The abundance of large, double, yellow blooms up to 15cm across, are hard to ignore with large petals surrounding the pom-pom-like central cone. A bright, eye-catching display from July to September, often longer, attracting bees, butterflies and other pollinators into your garden for a feast. Strong, wiry stems hold the blooms above clumps of bright green foliage and ensure when used as a cut flower, Helianthus Double Whammy creates dramatic magnificence, lasting for up to two weeks in a vase. Create a relaxing prairie style scene by growing with grasses where they will mingle and weave together, swaying in the breeze. Alternatively, grow in a cottage garden or as a prominent beauty in more modern gardens. Helianthus Double Whammy prefers to be grown in well-drained soil in a sunny spot. Reaching a height of 90cm and spreading to 50cm, she is a fully hardy perennial to -15 C, thriving outside for years to come with no winter protection required. Dying back over the coldest months to sprout again in the spring.
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Key Information
Latin Name Helianthus decapetalus Double Whammy 9cm pot
Common Name Sunflower
Hardiness H5 (-10 to -15°C)
Colour Yellow
Type Perennial
Format 9cm Pots
Position Full-Sun
Height in Maturity (m) 0.90
Spread in Maturity (m) 0.50
Soil Conditions Chalk Clay Loam
Aspect East-facing, South-facing, West-facing
Good for pots Yes
Good for wildlife Yes
Good for pollinators Yes
Good for cutting Yes

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