How to Grow Pink Sundown
Pink Sundown
Helianthus annuus 'Pink Sundown'
flowerPink Sundown is a stunning variety of annual sunflower featuring soft pink to coral-pink petals with a golden-yellow center disk. This cultivar grows to medium height and produces abundant blooms throughout the summer, making it an excellent choice for cut flowers and garden displays. It combines the classic sunflower structure with a refined, softer color palette.
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Example Pink Sundown timeline · Pittsburgh, PA (Zone 6b)
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Plant Pink Sundown
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 Pink Sundown blooms
Around Jun 26≈ 70 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Pink Sundown dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 2-10; grows as annual in colder regions, can self-seed in warmer zones
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Get my Pink Sundown timeline →Growth Stages
Seedling
2-3 weeksEmerge with cotyledons in 7-10 days; develop true leaves rapidly
Keep soil consistently moist but not waterlogged. Provide bright light. Thin seedlings to proper spacing once they have 2-3 true leaves.
Vegetative Growth
4-6 weeksRapid stem elongation and leaf development; plant reaches 3-5 feet tall depending on variety vigor
Support with stakes if needed in windy locations. Water deeply but allow soil to dry between waterings. Apply balanced fertilizer every 3-4 weeks.
Budding
2-3 weeksTerminal flower buds form and swell; plant energy is redirected to bud development
Ensure consistent water supply to prevent bud drop. Provide phosphorus-rich fertilizer (higher middle number) to support flower development.
Flowering
3-4 weeks per bloom; successive blooms over 8-12 weeksPink Sundown blooms open to reveal soft pink petals surrounding a golden-yellow disk; flowers may reach 4-6 inches in diameter
Deadhead spent blooms to encourage additional flowering. Continue regular watering. Watch for pests attracted to flowers.
Seed Maturation & Harvest
3-4 weeksPetals drop; disk flowers develop into seeds that fill the flower head; disk dries and turns brown
Reduce watering. Allow seeds to mature on the plant if harvesting for seeds; cover with netting to protect from birds. Cut for arrangements before full senescence.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Hand-pick beetles and larvae; apply neem oil or spinosad spray; encourage beneficial insects like parasitic wasps
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Strong water spray to dislodge; insecticidal soap; encourage ladybugs and lacewings; neem oil for heavy infestations
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Monitor for larvae in flower heads; remove affected heads; use Bt (Bacillus thuringiensis) if needed
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Increase humidity; spray with water; use miticide if severe; encourage predatory mites
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Ensure good air circulation; avoid overhead watering; remove infected leaves; apply sulfur fungicide if needed
Uses
Cut flower arrangements
CulinaryPink Sundown's soft coloring and sturdy stems make it exceptional for floral design and bouquets. The flowers last 7-10 days in a vase with fresh water changes. [source]
Pollinator and bird attraction
WildlifeThe abundant pollen and developing seeds attract bees, butterflies, and seed-eating birds like goldfinches and cardinals. This makes Pink Sundown valuable for supporting local ecosystems. [source]
Garden focal point and ornament
HouseholdThe distinctive pink coloring provides a soft, romantic accent in garden beds and borders, offering a unique alternative to traditional yellow sunflowers. The tall stems and large blooms create visual drama and vertical interest. [source]
Seed saving and propagation
CraftPink Sundown seeds can be harvested and saved for replanting in subsequent seasons, making it economical for home gardeners. Dried seed heads are also decorative for fall arrangements. [source]
Sunflower seed nutrition
MedicinalHarvested seeds are rich in vitamin E, selenium, and heart-healthy polyunsaturated fats. They can be roasted and eaten as a nutritious snack or used in cooking. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
For cut flowers, harvest in early morning when stems are turgid; cut when the outer ring of florets is fully open but the center disk is still relatively flat. For seeds, allow flowers to dry completely on the plant, then cut the seed heads and hang upside down to cure in a dry location for 2-3 weeks before removing seeds.
Fun Facts
- 🌱 Pink Sundown is a relatively modern cultivar that represents breeders' success in creating non-traditional sunflower colors; wild sunflowers are almost exclusively yellow due to dominant pigmentation genes.
- 🌱 Sunflowers exhibit heliotropism in youth, tracking the sun from east to west during the day and reorienting overnight—though mature Pink Sundown flowers typically face east consistently to warm their reproductive centers and attract pollinators.
- 🌱 A single Pink Sundown flower head can contain 1,000-2,000 individual flowers (florets), each capable of producing a seed; this is why sunflowers are so prolific seed producers.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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