How to Grow Clarkia Carmine King
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Clarkia Carmine King
Clarkia unguiculata 'Carmine King'
flowerClarkia Carmine King is an annual flowering plant prized for its vibrant deep carmine-red double blooms that rise on tall, slender stems. This cultivar is a member of the Clarkia genus, native to California, and produces fragrant, ruffled flowers that are excellent for cutting. The plant grows upright and bushy, making it ideal for borders, cottage gardens, and floral arrangements.
When should you plant Clarkia Carmine King in your zone?
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Example Clarkia Carmine King timeline · Pittsburgh, PA (Zone 6b)
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Plant Clarkia Carmine King
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 Clarkia Carmine King blooms
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Clarkia Carmine King dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives as an annual in zones 2-10; prefers cooler climates (zones 5-8)
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Seedling
2-3 weeksTiny seedlings with 2-4 true leaves emerge within 7-14 days. Plants are delicate and require consistent moisture.
Thin seedlings to proper spacing early. Keep soil consistently moist but avoid damping off by ensuring good air circulation.
Vegetative Growth
3-4 weeksPlant develops bushy foliage with multiple stems reaching 24-36 inches tall. Leaves are narrow and alternate.
Pinch back early growth to encourage bushiness. Water moderately and ensure adequate light. Feed with balanced fertilizer every 2-3 weeks.
Budding
2 weeksFlower buds appear at stem tips and leaf axils, showing deep red coloration even before opening.
Continue regular watering and feeding. Provide support stakes if needed for tall varieties. Remove any damaged buds.
Flowering
4-8 weeksDouble carmine-red blooms open in succession along the stems, creating impressive flower spikes. Blooms are ruffled and fragrant.
Deadhead spent flowers regularly to encourage continuous blooming. Provide afternoon shade in hot climates. Keep soil moist during peak bloom.
Harvest & Decline
Ongoing through frostCut flowers at peak bloom for arrangements. If left on plant, seed pods develop as flowering slows in heat.
Continue harvesting to extend bloom period. In warm climates, plants decline in mid-summer heat. Save seed pods if desired for self-seeding next year.
Common Pests
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Increase humidity, spray with water or neem oil. Improve air circulation.
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Provide good air circulation, avoid overhead watering, apply sulfur or fungicide if needed.
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Use yellow sticky traps, spray with insecticidal soap, encourage beneficial insects.
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Spray with water, use insecticidal soap, introduce ladybugs.
Uses
Edible Flowers
CulinaryClarkia flowers are edible with a slightly peppery flavor and can be used as garnish for salads, desserts, and beverages. Their striking color makes them visually appealing for culinary presentation. [source]
Cut Flower Arrangements
CraftClarkia Carmine King is excellent for fresh and dried floral arrangements due to long stems, vibrant color, and lasting vase life. The flowers are popular with florists for cottage-style and wildflower arrangements. [source]
Indoor Fragrance
HouseholdThe fragrant blooms provide natural scent when brought indoors in vases, adding both visual and aromatic appeal to home interiors. [source]
Pollinator Support
WildlifeClarkia flowers attract bees, butterflies, and other pollinators, making them valuable for supporting local pollinator populations in gardens. [source]
Dried Flowers
CraftFlowers can be dried and pressed for crafts, cards, and dried arrangements, retaining much of their vibrant carmine color. [source]
Harvest Tips
Cut flowers in early morning when stems are fully hydrated, selecting blooms that are just opening. Cut at least 6 inches of stem for arrangements. Cut flowers regularly to promote more blooms. Stems last 7-10 days in a vase with fresh water and floral preservative.
Fun Facts
- 🌱 Clarkia is named after William Clark of the Lewis and Clark Expedition, which first documented California native plants in the early 1800s.
- 🌱 This annual flower thrives in cool weather and is particularly productive in Mediterranean climates, blooming prolifically in spring and fall but declining in hot summers.
- 🌱 The double-flowered form of Clarkia Carmine King is a cultivated selection that produces extra petals, making it more ornamental than the wild single-flowered species.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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