How to Grow Zinnia Oklahoma Blaze
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Zinnia Oklahoma Blaze
Zinnia elegans 'Oklahoma Blaze'
flowerOklahoma Blaze is a vibrant zinnia cultivar known for its striking red-orange flowers with golden-yellow tips, creating a distinctive flame-like appearance. This compact, bushy variety is a reliable annual that blooms prolifically from summer through fall. It's an excellent choice for borders, containers, and cut flower arrangements.
When should you plant Zinnia Oklahoma Blaze in your zone?
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Example Zinnia Oklahoma Blaze timeline · Pittsburgh, PA (Zone 6b)
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Plant Zinnia Oklahoma Blaze
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 Zinnia Oklahoma Blaze blooms
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Zinnia Oklahoma Blaze dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives as an annual in zones 2-11; grows vigorously in zones 5-9
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Seedling
2-3 weeksTiny seedlings with 2-4 true leaves emerge within 7-10 days. Plants are delicate and pale green.
Keep soil consistently moist but not waterlogged. Provide bright light and maintain temperatures above 70°F. Thin or transplant when 2 true leaves appear.
Vegetative Growth
3-4 weeksPlants develop sturdy stems and bushy foliage with increasingly larger, lance-shaped green leaves. Growth is rapid and compact.
Pinch back growing tips when 6 inches tall to encourage bushier, fuller growth. Reduce watering frequency as plants establish. Fertilize lightly with balanced fertilizer every 2-3 weeks.
Flowering Initiation
1-2 weeksFlower buds begin to form at branch tips. Plant continues to grow taller while buds swell and elongate.
Continue pinching if plants are leggy. Switch to lower-nitrogen fertilizer (higher phosphorus) to support blooming. Ensure consistent watering but allow soil surface to dry between waterings.
Peak Bloom
8-12 weeksMasses of red-orange double or semi-double flowers with golden-yellow petal tips open prolifically. Flowers are 2-3 inches across and create a fiery display.
Deadhead spent flowers regularly to encourage continuous blooming. Water deeply when top inch of soil is dry. Feed every 2 weeks with bloom-boosting fertilizer. Spray preventatively for powdery mildew if weather is humid.
Maturity & Harvest
Until first frostPlant reaches full size (typically 24-30 inches tall) and continues flowering until frost. Flowers remain vibrant if deadheaded regularly, or set seed if allowed to mature.
Cut flowers in early morning for longest vase life. Leave some spent flowers to develop seed heads if you want self-sown volunteers next year. Reduce watering slightly in late summer.
Common Pests
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Ensure good air circulation; avoid overhead watering; spray with sulfur or neem oil if needed; thin dense foliage
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Spray foliage with water to dislodge; use insecticidal soap or neem oil; increase humidity around plants
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Use yellow sticky traps; spray with insecticidal soap; encourage natural predators like ladybugs
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Spray with strong water stream; use insecticidal soap; apply neem oil; attract beneficial insects
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and
Handpick in early morning; use copper tape barriers; apply diatomaceous earth; set beer traps
Uses
Edible Flowers
CulinaryZinnia petals are edible and add peppery, slightly spicy flavor and striking visual appeal to salads, garnishes, and desserts. [source]
Cut Flowers & Arrangements
CraftOklahoma Blaze is prized for cut flower arrangements, bouquets, and floral designs due to its long vase life and vibrant flame-like colors. [source]
Pollinator Support
WildlifeZinnias are excellent nectar sources that attract butterflies, bees, and hummingbirds throughout the blooming season. [source]
Dried Flowers
HouseholdDried zinnia flowers retain their vibrant colors and are used in dried arrangements, wreaths, and craft projects. [source]
Traditional Herbal Use
MedicinalZinnia flowers have been used in traditional medicine for their potential anti-inflammatory and antimicrobial properties. [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 but before heat of day. Use sharp scissors or pruners to cut stems at a 45-degree angle just above a leaf node. Remove lower leaves from cut stems. Change water every 2-3 days. Zinnia flowers typically last 7-14 days in a vase. Deadhead spent flowers on plants to extend blooming season until frost.
Fun Facts
- 🌱 Oklahoma Blaze was bred and introduced in Oklahoma, reflecting the state's horticulture legacy and the flower's heat tolerance—it thrives in hot, dry summers where many flowers struggle.
- 🌱 Zinnias are native to Mexico and are named after Johann Gottfried Zinn, an 18th-century botanist; they were brought to Europe in the 1700s and have since become beloved worldwide.
- 🌱 A single deadheaded zinnia plant can produce hundreds of flowers over a season; the more you harvest or deadhead, the more blooms it produces in a remarkable display of resilience.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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