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Dahlia Decorative 'American Sun' (Ships in Spring)

Dahlia

Dahlia 'American Sun' is a decorative variety with cheerful lemon-yellow blooms that glow against dark green foliage. Its fully double, 4- to 5-inch flowers are held on strong stems, making them excellent for cutting and garden display. Growing 36 to 44 inches tall, it thrives in full sun with well-drained soil, blooming from midsummer until frost. Hardy in USDA zones 8 to 11.

Bulk Box of 25 Bulbs, #1 Size tubers

Dahlia Calculator

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Growing and Maintenance Tips for Dahlia Decorative 'American Sun' (Ships in Spring)

Planting: In spring, plant tubers 3 to 4 inches deep with the eye facing up, once soil has warmed to at least 60°F. Space 18 to 24 inches apart to accommodate their full, bushy growth.
Location: Full sun (6–8 hours daily) is essential for strong stems and prolific blooms.
Soil: Fertile, well-drained soil with a slightly acidic to neutral pH (6.0–7.0). Enrich with compost or aged manure before planting.
Watering: Water deeply once or twice a week, keeping soil evenly moist but not soggy. Avoid watering until shoots emerge to prevent rot.
Temperature: Hardy in USDA zones 8–10. In colder zones, lift tubers after frost and store in a cool, dry place.
Fertilization: Apply a balanced fertilizer monthly or use a slow-release formula at planting and midsummer. Avoid high-nitrogen feeds to prevent leggy growth.
Pruning: Pinch back when plants reach 12 inches tall to encourage branching. Deadhead regularly to extend bloom time.
Pest & Disease: Watch for aphids, spider mites, and fungal issues. Ensure good air circulation and avoid overhead watering.
Propagation: Divide tubers in spring, ensuring each division has at least one viable eye.