Heartthrob Collarette Dahlia

Heartthrob Collarette Dahlia

The Heartthrob Dahlia brings fiery passion to the garden with its deep crimson-red blooms edged by a vivid red and yellow collar that adds striking contrast. Each flower opens with a touch of drama, its collarette form offering both elegance and character that catches the light beautifully. A profuse bloomer, Heartthrob lights up garden beds, borders, and mixed planting schemes with bold color and texture that make it hard to look away.

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Details

• Form: Collarette 

• Bloom Size: ~3 inches 

• Bloom Size Class: Small (4-6") / Mini if you deem “~3 inch” to be under the Small class — you can choose “Miniature” if that fits your categorization.

• Plant Height: Approximately 3½ ft (≈ 42") 

• Stem Strength: Strong (good blooming and producing many flowers, though not noted as “excellent cut-flower” by Swan) 

• Unicorn Status: Rare / Collector’s Favorite (it’s not extremely common)

• Primary Color: Crimson-Red 

• Secondary Color: Yellow collar (and subtle red collar alongside the yellow) 

• Plant ID: 

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A Bit of History

Introduced around 2010 by Swan Dahlias, Heartthrob has become a beloved choice for gardeners who want bold color with a decorative twist. Its collarette form—where a ring of smaller petals (the collar) surrounds the open center—offers a unique visual texture that stands apart from fully double or formal decorative dahlias. Heavy blooming and reliable in garden conditions, it’s admired both for its strong display in beds and its ability to draw the eye in mixed plantings.

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Ideal For

• Colorful mixed borders or beds where contrast and vibrancy are desired

• Patio containers and focal points to draw attention

• Love of collarette / unusual form dahlias in cutting gardens (though it's not listed as “excellent cut flower” by every source) 

• Garden schemes with warm color palettes (reds, golds, chartreuse, etc.)

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Pairs Well With

Jennifer’s Wedding — for soft white contrasts that let Heartthrob’s reds pop

Cool foliage plants like Lamb’s Ear or Dusty Miller — to soften the intensity and add texture

Warm gold and orange dahlias such as E.Z. Duzzit (which also has a collar) or other small collarette-types to harmonize the collar accent