How to Grow Carnation Flowered Dahlia
Carnation Flowered Dahlia
Dahlia × hybrida 'Carnation Flowered'
flowerCarnation Flowered dahlias are ornamental flowering plants prized for their fully double blooms with numerous layered petals resembling carnations. These medium-sized flowers produce abundant blooms throughout summer and fall, making them excellent cut flowers and garden focal points. They are tender perennials typically grown as annuals in most climates.
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Example Carnation Flowered Dahlia timeline · Pittsburgh, PA (Zone 6b)
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Plant Carnation Flowered Dahlia
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Carnation Flowered Dahlia blooms
Around Jun 26≈ 70 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Carnation Flowered Dahlia dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 8-11; grown as annuals elsewhere or with winter storage in zones 7 and below
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Tuber Sprout & Early Growth
2-3 weeksTubers develop shoots and roots in warm soil. First green stems emerge above ground.
Wait until soil temperature reaches 60°F before planting. Keep soil warm and moist. Plant tubers 4-6 inches deep. Provide support structure if needed.
Vegetative Growth
3-4 weeksPlant develops leafy stems and a bushy framework. No flowers yet. Plant grows rapidly in warm weather.
Pinch growing tips when plant reaches 12-18 inches tall to encourage branching and more flowers. Remove lower leaves as plant matures. Apply balanced fertilizer every 3-4 weeks. Water deeply and consistently.
Budding & Flowering Begins
4-6 weeksFlower buds appear at stem tips. First blooms open, showing characteristic carnation-like double petals.
Deadhead spent flowers immediately to encourage continuous blooming. Remove central bud if you want larger individual flowers; leave all buds for more blooms. Switch to fertilizer higher in phosphorus and potassium to support flowering.
Peak Blooming
8-12 weeksPlant produces abundant fully double flowers continuously. Blooms have many layered petals in white, pink, red, purple, or bi-colors.
Continue deadheading daily. Water during dry spells. Stake tall varieties (3-4 feet). Cut flowers early morning for arrangements. Continue fertilizing every 2-3 weeks with bloom-boosting formula.
Decline & Dormancy Preparation
Variable; frost-dependentFlowering slows as days shorten and temperatures cool in fall. Foliage may yellow. In zones 8-11, plants may continue blooming; in cooler zones, prepare for frost.
In frost-free zones, reduce watering and fertilizer. In zones 7 and below, cut stems back to 4-6 inches after first frost, dig tubers carefully, let them dry, and store in cool (50-60°F), dry location for winter. Mark varieties for replanting next year.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Hand-pick beetles early morning; use neem oil or insecticidal soap; remove affected leaves; plant garlic nearby as repellent
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Improve air circulation; avoid overhead watering; apply sulfur dust or fungicide; remove infected leaves; ensure adequate spacing
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Increase humidity; spray with water; use neem oil or insecticidal soap; ensure consistent watering
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Set traps with rolled newspaper or oils; remove garden debris; reduce water at soil level
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and
Remove hiding spots (debris, mulch near stems); use copper barriers or slug bait; hand-pick at night; encourage predators
Uses
Edible Flowers
CulinaryDahlia petals are edible with a slightly spicy, citrus-like flavor. They make beautiful garnishes for salads, cakes, and gourmet dishes, adding color and a unique taste. [source]
Cut Flowers & Arrangements
CraftCarnation Flowered dahlias are among the finest cut flowers, lasting 7-10 days in water. Their double blooms and range of colors make them ideal for bouquets, wedding arrangements, and floral design. [source]
Garden Decoration & Landscape Design
HouseholdThese dahlias serve as striking focal points in perennial borders, cottage gardens, and formal arrangements. Their long blooming period and variety of colors make them versatile for any garden style. [source]
Pollinator Attraction
WildlifeDahlias attract bees, butterflies, and other beneficial insects throughout the blooming season. They are valuable nectar sources for pollinators in late summer and fall when other flowers are scarce. [source]
Traditional Herbal Use
MedicinalIn some traditional medicine systems, dahlia tubers have been used to support digestive health and blood sugar management, though scientific research is limited. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Cut flowers in early morning when stems are full of moisture. Choose blooms at stage of opening (not fully open for longer vase life). Cut at a 45-degree angle and place immediately in cool water. Cut dahlias last 7-10 days in a vase. To extend vase life, condition stems in water for 2 hours before arranging, change water every 2 days, and remove lower foliage below water line.
Fun Facts
- 🌱 Carnation Flowered dahlias are named for their resemblance to carnation blooms, featuring multiple layers of petals that open gradually over several days, extending the ornamental display.
- 🌱 Dahlias originated in Mexico and were cultivated by the Aztecs, who used them for food and ceremony; the modern varieties we grow today were developed through extensive hybridization in 19th-century Europe.
- 🌱 A single dahlia plant can produce hundreds of flowers over a season when deadheaded regularly, making them exceptionally prolific compared to most garden flowers.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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