← Plant Guides

How to Grow Carnation-Flowered Dahlia 'Jowey Mirella'

Wikimedia Commons

Carnation-Flowered Dahlia 'Jowey Mirella'

Dahlia × hybridus 'Jowey Mirella'

flower

A stunning ornamental dahlia cultivar featuring fully double carnation-like flowers with ruffled, fringed petals in shades of coral-orange with darker undertones. This medium-height variety produces abundant blooms from summer through fall, making it an excellent choice for cut flowers and garden display. The intricate petal formation resembles a carnation or ranunculus, setting it apart from other dahlia types.

When should you plant Carnation-Flowered Dahlia 'Jowey Mirella' in your zone?

Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.

Get my Carnation-Flowered Dahlia 'Jowey Mirella' timeline →

Example Carnation-Flowered Dahlia 'Jowey Mirella' timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Carnation-Flowered Dahlia 'Jowey Mirella'

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. First Carnation-Flowered Dahlia 'Jowey Mirella' blooms

    Around Jun 26

    ≈ 70 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Carnation-Flowered Dahlia 'Jowey Mirella' dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6-8 hours daily for optimal blooming
💧
Water: Water deeply and consistently; keep soil moist but not waterlogged. Water at the base to avoid foliage diseases. Reduce watering after frost kills back the plant.
📏
Spacing: 18 inches
📅
Days to maturity: 70-90 days from planting tubers to first bloom
🌱
Planting depth: 4-6 inches deep for tubers; plant with the 'eye' (growth bud) facing up

Soil

Type: Well-draining loamy soil with organic matter
pH: 6.0-7.0
Amendments:
Compost Aged manure Perlite or coarse sand for drainage Bonemeal at planting

Growing Zones

Find your zone →

Zones 7-10; grows as an annual in cooler zones or with tuber storage

7a 7b 8a 8b 9a 9b 10a 10b 11a

Sign up free to see if Carnation-Flowered Dahlia 'Jowey Mirella' grows in your zone — and get a personalized planting timeline.

Get my Carnation-Flowered Dahlia 'Jowey Mirella' timeline →

Growth Stages

1

Tuber Sprouting

2-3 weeks

Dormant tubers begin to develop eyes and small shoots emerge from the soil

Plant after last frost when soil is warm (60°F+). Ensure good drainage to prevent rot. Water sparingly until shoots appear.

2

Vegetative Growth

4-6 weeks

Plant develops sturdy stems and compound pinnate leaves; rapid height increase

Install stakes or cages early for support. Pinch out the main growing tip when plant reaches 12 inches to encourage branching and more blooms. Fertilize every 2-3 weeks with balanced or bloom-boosting formula.

3

Budding & Flowering

8-12 weeks

Terminal buds form and transition to opening carnation-like double flowers with ruffled petals

Remove lateral buds below the main flower bud if large exhibition blooms are desired. Deadhead spent flowers to encourage continuous blooming. Maintain consistent moisture and feed with phosphorus-rich fertilizer.

4

Peak Bloom & Maintenance

6-8 weeks or until frost

Plant reaches full bloom production with multiple flowers at varying stages of maturity

Continue deadheading. Cut flowers in early morning for longest vase life. Watch for pests and diseases in humid conditions. Continue regular watering and feeding.

5

Senescence & Dormancy Preparation

Frost until next spring

Foliage yellows and flowers cease after first frost; plant dies back

In zones 7-9, cut foliage to 4-6 inches after first frost. In cooler zones, dig tubers carefully, allow to dry, store in cool (50-60°F), dry location. In warm zones, mulch heavily and leave in ground.

Companion Planting

Plan your garden →

Plant with:

Zinnias Cosmos Salvia Coreopsis Echinacea Rudbeckia Russian Sage Sedum

Avoid planting near:

Fennel Dill Mint (aggressive spreader) Plants requiring dry conditions

Common Pests

  • Spray foliage with water to increase humidity; use neem oil or insecticidal soap; improve air circulation

  • Ensure good air circulation; avoid overhead watering; apply sulfur dust or baking soda spray; remove affected foliage

  • Lay traps with rolled newspaper; handpick at night; use diatomaceous earth; reduce mulch depth around base

  • and

    Remove debris and excess mulch; set beer traps; handpick at night; apply copper tape barriers; use iron phosphate baits

  • Handpick in early morning; use pheromone traps away from plants; apply neem oil; attract parasitic wasps

  • Remove affected flowers; spray with insecticidal soap or neem oil; use blue sticky traps; improve air circulation

Uses

🍳

Ornamental Garnish

Culinary

Dahlia petals are edible and can be used as a decorative garnish for high-end culinary presentations and desserts, adding both visual appeal and a slightly peppery flavor note. [source]

🎨

Cut Flower Arrangements & Floral Design

Craft

The carnation-like double blooms with ruffled petals make 'Jowey Mirella' an exceptional choice for wedding bouquets, centerpieces, and floral art due to their long vase life and distinctive texture. [source]

🏠

Fresh Floral Display & Home Decoration

Household

These striking orange-coral blooms add warmth and elegance to interior spaces, brightening homes and creating focal points in living areas throughout the summer and fall season. [source]

🦋

Pollinator Support

Wildlife

Dahlias attract bees, butterflies, and other beneficial insects, providing essential nectar and pollen sources during late summer and fall when other flowers are waning. [source]

💊

Traditional Herbal Use

Medicinal

In traditional medicine, dahlia tubers and roots have been used in some cultures for their potential anti-inflammatory and immune-supporting properties, though modern clinical evidence 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 fully hydrated and blooms are fully open or just opening. Use a sharp knife and cut at a 45-degree angle above a leaf node to encourage branching. Remove lower foliage before placing in water. For longest vase life (7-10 days), change water every 2-3 days and recut stems. Pinching out the central flower stem when the plant is young encourages more lateral flowering stems for continuous cutting.

Fun Facts

  • 🌱 Dahlias are native to Mexico and were considered a sacred flower by the Aztecs, who used the tubers as a food source and valued the blooms in religious ceremonies.
  • 🌱 'Jowey Mirella' is named after Jowey Mitchell, a renowned British dahlia hybridizer and enthusiast who developed many exceptional modern dahlia cultivars during the late 20th century.
  • 🌱 Dahlia tubers are perennial and can live for many years when properly stored; some gardeners keep the same plants for over a decade, with tubers multiplying and creating larger clumps over time.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Cultivar Deadhead Full Sun Mulch pH
Shop Carnation-Flowered Dahlia 'Jowey Mirella' plants and related plants at Plant Addicts →

Join 30,000 gardeners planning their gardens with LizPlants.

Get your personalized Carnation-Flowered Dahlia 'Jowey Mirella' planting timeline

Tell us your zip code and we'll calculate exactly when to start Carnation-Flowered Dahlia 'Jowey Mirella' seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.

Get my Carnation-Flowered Dahlia 'Jowey Mirella' timeline →