Penhill Watermelon Informal Decorative Dahlia

Penhill Watermelon Informal Decorative Dahlia

If drama had a flower, it would be Penhill Watermelon. With its massive, wildly ruffled blooms in a swirl of soft watermelon pink, coral, and peachy gold, this Dinnerplate Dahlia is anything but subtle. Each flower can reach a show-stopping 8 to 10 inches across, with loosely arranged petals that curl and twist like silk in motion. The effect is both flamboyant and romantic — perfect for gardeners who love bold color and effortless elegance. On tall plants with strong stems, Penhill Watermelon makes a jaw-dropping centerpiece in both gardens and bouquets.

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Details

• Form: Informal Decorative (Dinnerplate)

• Bloom Size: AA (8 to 10 inches)

• Plant Height: Tall (>48")

• Stem Strength: Strong

• Unicorn Status: Common

• Primary Color: Watermelon Pink

• Secondary Color: Peach / Golden Blush

• Plant ID: 

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A Bit of History

Bred in the Netherlands and beloved around the world, Penhill Watermelon rose to fame not just for its size, but for its striking coloration and unpredictable beauty — no two blooms are exactly alike. It's part of the Penhill series, known for over-the-top form and luscious colors. Though it’s more widely available today, its look still feels like a rare treasure pulled from a high-end floral arrangement. Growers love it for its consistent performance and long vase life despite its size.

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Ideal For

• Statement blooms in cutting gardens

• Bold wedding or event floral work

• Large mixed borders or focal planting

• Dahlia enthusiasts and Instagram-worthy displays

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Pairs Well With

‘Cafe au Lait’ Dahlia – softens the palette with creamy blush tones

‘Thomas Edison’ Dahlia – deep purple contrast adds depth

Ornamental Grasses (e.g. Pennisetum ‘Rubrum’) – brings texture and movement to the planting