Penhill Dark Monarch Informal Decorative Dahlia

Penhill Dark Monarch Informal Decorative Dahlia 

The Penhill Dark Monarch Dahlia is nothing short of dramatic—imagine lush, sprawling blooms in smoky plum-raspberry tones with soft blush undertones, each petal curling in playful ruffles that catch the light and draw the eye. This dinner-plate-sized beauty (10–12 inches across) stands tall and proud, making a striking focal point in the garden or an elegant showpiece in a vase. Whether planted in a border or cut for a bouquet, its rich tonal depth and generous size bring bold sophistication to your planting palette.

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Details

• Form: Informal Decorative (dinner-plate size) 

• Bloom Size: 10–12″ (giant class) 

• Plant Height: Tall (>48″) approx. 4-5 ft (48-60″) 

• Stem Strength: Strong

• Unicorn Status: Semi-common

• Primary Color: Smoky Plum / Raspberry

• Secondary Color: Blush / Buttermilk undertones 

• Plant ID: 

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A Bit of History

Penhill Dark Monarch comes to us as a premium “dinner-plate” dahlia—bred for impact, size, and elegance. Its layered, ruffled petals and rich, moody color make it a favorite among both serious cut-flower growers and home gardeners seeking a showstopper. Over time, its reputation has grown for producing a generous number of large blooms on strong stems late into the season. Gardeners who gravitate towards dramatic texture and huge flowers often cite Dark Monarch as a must-have in their collection.

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Ideal For

• Cutting gardens and large-scale vase arrangements

• Bold garden borders where height and size matter

• Statement plantings in mixed beds for late-summer to fall color

• Event bouquets or installations seeking a dramatic focal flower

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Pairs Well With

Cafe au Lait — the creamy neutral tones create a striking contrast to Dark Monarch’s rich color

Cornel Bronze — for a warm, autumnal palette with textured depth

Soft foliage plants like Dusty Miller or Artemisia — the silvery-green leaves offer a calming backdrop that lets the dramatic blooms shine