FlowerPetunia
Double Madness Series Petunia
Double Madness Series Petunias bring a spectacular twist to traditional single-bloom petunias with their distinctive double flowers, each bloom reaching 3 inches wide with a feathery, papier-mâché texture that looks almost too elaborate to be real. These hybrid annuals mature quickly, reaching flowering stage in 100-109 days, and grow into tidy, mounded plants 10-15 inches tall that work beautifully in containers, borders, and massed plantings. Hardy in zones 7-11 and thriving in full sun, they deliver weeks of continuous color without the fussiness of many double-flowered varieties.
Photo © True Leaf Market
Growing Conditions
USDA Zone
7-11
Sunlight
Full Sun
Water
Moderate
Soil
Well-drained Loam, Fertile
Growth Stats
15 in
Height
TypeUpright
Spacing
14
Plant Profile
Sunlight
Full Sun
Water
Moderate
Zones
7-11
Size
15in H x ?in W
Growth
—
Care
High
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Highlights
The Double Madness Series distinguishes itself through its reliably double blooms, each with that distinctive crinkled, tissue-paper texture that catches light and adds dimension to any planting scheme. Unlike single petunias, these doubles create a fuller, more ornamental effect while maintaining compact, upright growth that doesn't sprawl or require constant deadheading to stay tidy. The neat mounding habit and consistent 10-15 inch height make them exceptionally easy to incorporate into garden designs.
Common Uses
Double Madness Petunias are grown entirely as ornamental flowers, prized for their abundant double blooms that add texture and visual interest to container gardens, raised beds, mixed borders, and mass plantings. Their compact, upright form makes them ideal for window boxes and front-of-the-border positions where their papier-mâché-textured flowers can be appreciated up close.
Growing Timeline
No timeline data available yet for this variety.
Care Instructions
Start Indoors
Start seeds indoors 6-8 weeks before your last spring frost. Sow pelleted seeds on top of moist seed-starting mix without covering, as petunias require light to germinate. Keep soil at 70-75°F with consistent moisture. Seedlings typically emerge within 7-10 days. Provide bright light once they break soil.
Transplant Outdoors
Harden off seedlings over 7-10 days before moving them outdoors. Transplant after all danger of frost has passed and soil has warmed to at least 60°F. Space plants 14 inches apart (with 26 inches between rows for larger plantings) in well-draining soil enriched with compost.
Pruning
Pinch seedlings once or twice before transplanting to encourage bushier, more compact plants with more branching points for flower production. Deadhead spent blooms regularly to maintain the mounded shape and encourage continuous flowering throughout the season.
Growing Calendar
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Companion Planting
Pests & Diseases
Ecology & Traits
Scientific Classification
Petunia x hybrida
Family
Solanaceae
Genus
Petunia
Growth Habit
Upright
History & Origin
“The Double Madness Series represents the latest evolution in petunia breeding, developed as a hardy, spectacular alternative to the internationally recognized single-bloom petunia that has dominated gardens for generations. Breeders chose to cross petunia varieties specifically to achieve stable, repeatable double-flowering characteristics while maintaining vigor and disease resistance in a compact plant form. This series was engineered to deliver the visual impact of old-fashioned double petunias with the vigor and disease tolerance that modern gardeners expect from their annuals.”