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HEIGHT: 12 - 18 inches
SPREAD: 18 - 24 inches
LIGHT: Full Sun
WATER: Moderate; prefers evenly moist, well-drained soil
IN BLOOM: Late Spring to Frost
HARDINESS: Zones 2-11
TYPE: Annual
Alderman Petunia is a classic heirloom grandiflora petunia admired for its large, velvety blooms in rich shades of violet to deep purple. Flowering continuously from late spring until frost, this vigorous variety produces abundant trumpet-shaped flowers that add bold color and fragrance to containers, hanging baskets, window boxes, and garden beds. Its timeless beauty and reliable performance have made it a favorite among gardeners for generations.
Large, velvety violet-purple flowers
Blooms continuously from late spring until frost
Lightly fragrant flowers
Excellent for containers, hanging baskets, and borders
Attracts bees, butterflies, and other pollinators
Classic heirloom grandiflora variety
Outstanding seasonal color
Containers
Hanging baskets
Window boxes
Cottage gardens
Borders and edging
Mixed flower beds
Patio planters
I grow Alderman Petunia because it's a timeless variety that has remained popular for generations for good reason. Its rich violet-purple flowers provide months of dependable color, and the large blooms make an eye-catching display in containers and garden beds alike. I also appreciate its classic heirloom character, offering gardeners a beautiful petunia that has stood the test of time while continuing to perform reliably throughout the growing season.
Plant in full sun for the best flowering performance.
Grow in fertile, well-drained soil and water regularly, allowing the soil surface to dry slightly between waterings.
Fertilize every 1–2 weeks during the growing season to encourage continuous blooming.
Remove faded flowers periodically to keep plants looking tidy and promote additional blooms.
Provide adequate spacing to encourage good air circulation and reduce disease pressure.