How to Grow Benary's Giant Zinnia Yellow
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Benary's Giant Zinnia Yellow
Zinnia elegans 'Benary's Giant Yellow'
flowerBenary's Giant Yellow is a striking tall zinnia cultivar prized for its large, fully double golden-yellow blooms that can reach 4-5 inches in diameter. It's an annual that grows 24-36 inches tall and is excellent for cut flowers, borders, and arrangements. The robust plants produce abundant blooms throughout the summer and fall until frost.
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Example Benary's Giant Zinnia Yellow timeline · Pittsburgh, PA (Zone 6b)
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Plant Benary's Giant Zinnia Yellow
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 Benary's Giant Zinnia Yellow blooms
Around Jun 21≈ 65 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Benary's Giant Zinnia Yellow dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Best in zones 3-11; grow as annual in most zones, perennial in warmest regions
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Get my Benary's Giant Zinnia Yellow timeline →Growth Stages
Seedling
2-3 weeksTiny seedlings with first true leaves emerge within 5-10 days. Plants are delicate and light green.
Maintain consistent moisture without waterlogging. Provide bright light and warm conditions (70-75°F). Thin or transplant when first true leaves appear.
Vegetative Growth
3-4 weeksYoung plants develop sturdy stems and multiple sets of lance-shaped leaves. Height increases rapidly.
Pinch growing tips when plants reach 6-8 inches to encourage branching and bushier plants with more blooms. Harden off before transplanting outdoors.
Bud Formation
2-3 weeksFlower buds begin appearing at stem tips. Plants are stocky and full of foliage.
Maintain consistent watering and full sun exposure. Begin fertilizing every 2-3 weeks with balanced or slightly lower nitrogen fertilizer.
Blooming
8-12 weeks until frostLarge, double yellow flowers open fully, displaying their impressive 4-5 inch diameter blooms. Multiple flowers appear simultaneously.
Deadhead spent blooms regularly to encourage continuous flowering. Stake tall varieties if needed. Water consistently and fertilize every 2 weeks.
Late Season
Until first frostPlants continue flowering abundantly through fall. Blooms may appear slightly smaller as nights cool, but production remains strong.
Continue deadheading and watering. Plants will produce until first frost. Allow some flowers to set seed if you wish to save seeds for next year.
Common Pests
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Spray with water to dislodge; use insecticidal soap or neem oil if severe. Improve air circulation.
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Space plants adequately for air circulation; avoid overhead watering. Apply sulfur dust or fungicide if needed.
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Use yellow sticky traps; spray with neem oil or insecticidal soap
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Hand-pick early in morning when beetles are sluggish; use beetle traps away from plants
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Ensure well-draining soil, avoid overwatering seedlings, provide good air circulation
Uses
Edible flower garnish
CulinaryZinnia petals are edible with a slightly peppery flavor and can be used to garnish salads, desserts, and beverages for visual appeal. Ensure no pesticides have been applied before consuming. [source]
Cut flowers and floral arrangements
CraftBenary's Giant Yellow is outstanding for cutting with long stems and large, long-lasting blooms perfect for bouquets, wedding arrangements, and professional floral design. The bold yellow color adds vibrant contrast to mixed arrangements. [source]
Garden color and landscape design
HouseholdThese tall, showy plants create striking vertical elements in borders, cottage gardens, and cutting gardens. The bright yellow blooms attract the eye and coordinate well with complementary colors like purple and blue flowers. [source]
Pollinator attractant
WildlifeZinnias are excellent nectar and pollen sources for bees, butterflies, and other beneficial insects. The abundant double flowers support a diverse pollinator population throughout the blooming season. [source]
Traditional herbal remedy
MedicinalIn traditional folk medicine, zinnia flowers have been used in herbal teas and preparations for their potential antimicrobial and anti-inflammatory properties, though scientific research remains 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 or late evening when stems are turgid. Harvest when the double flower is fully open with all petals unfurled. Cut stems at least 6-8 inches long, removing leaves that would sit below the waterline in a vase. Zinnia flowers last 7-14 days in a vase. For seeds, allow several flowers to remain on plants until petals fully brown and dry; collect seed heads and dry indoors for 1-2 weeks before extracting seeds.
Fun Facts
- 🌱 Benary's Giant is a cultivar originally developed by German seed company Ernst Benary in the 1950s, and remains one of the largest-flowered zinnia varieties available to home gardeners.
- 🌱 Zinnias are native to Mexico and were originally cultivated by the Aztecs; the name 'zinnia' honors German botanist and physician Johann Gottfried Zinn.
- 🌱 Zinnias are among the easiest flowers to grow from seed, with germination rates typically exceeding 90%, making them perfect for beginning gardeners and children's gardens.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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