3 Dahlia Tubers Dinnerplate Dahlia Dahlia pinnata

Dinnerplate Dahlia is a tuberous perennial known for producing very large, fully double blooms on sturdy stems, making it a standout choice for garden borders and cut flower arrangements. The plants grow from dormant tubers, emerge in spring, and flower from midsummer into autumn, offering a bold and colorful presence in the landscape.

These dahlias work especially well in cutting gardens, mixed perennial borders, and large patio containers. The blooms are prized for their size and substance in floral displays, while the plants perform best in full sun with consistent moisture and well-drained soil. Tubers are typically planted after the last frost in spring and benefit from staking where stems become top-heavy.

Species: Dahlia pinnata
Variety: Dinnerplate
Type: Tuberous perennial
Plant_Habit: Upright, bushy
Sun: Full sun
Soil: Well-drained, fertile soil
Days_to_Harvest: 80-100 days from planting to bloom
Zones: 8-11, or grown as an annual in cooler zones
Germination: Not applicable
Sowing: Plant tubers in spring after the last frost, about 4-6 inches deep
Spacing: 18-24 inches apart
Notes: Water regularly during active growth; tall stems may need staking