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Northwest Blooms · Dahlias

Dahlia 'AC Big Iron'

AC Big Iron Dahlia

Dahlia 'AC Big Iron'
Height
4 to 5 ft
Bloom size
Large (8‑10 in)
Flower color
Dark red
Days to maturity
80 to 100 days
Light
Full Sun
Plant spacing
12-18 inches

About this plant

Dahlia 'AC Big Iron' features lush, dark-red blooms held in the informal decorative form, defined by relaxed, layered petals that create a full, open flower head. Each blossom has a rich, velvety red tone that intensifies toward the center, creating a deepened core that enhances the flower's overall depth and richness. Blooms appear in midsummer and continue through the first frosts of autumn, bringing consistent color throughout the season.

The layered form and saturated hue lend strong visual impact in garden beds and fresh-cut bouquets, with the bold petals standing out especially well in evening light. Its dramatic coloring and generous blooms make it an excellent choice for adding depth and contrast to mixed dahlia plantings.

Planting & care

Growing beautiful dahlias starts with thoughtful planting and care. A sunny location, well-draining soil, and consistent attention throughout the growing season help plants develop abundant flowers. Regular watering and feeding encourage healthy growth, while mulch helps conserve moisture. Removing spent flowers keeps plants blooming freely from summer into fall.