FlowerPetunia
Madness Series Petunia
Madness Series Petunias deliver early-season color with stunning 3-inch blooms in over 20 eye-catching shades, all packed into compact 10-15 inch mounded uprights. These hybrid annuals reach maturity in 98-105 days and thrive in full sun across zones 7-11, making them reliable performers from spring through frost. Their neat, tidy growth habit and abundant flowering make them exceptionally practical for borders, edging, and containers, while their disease resistance to Tobacco Mosaic Virus ensures healthy, vibrant plants throughout the season.
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
10
Plant Profile
Sunlight
Full Sun
Water
Moderate
Zones
7-11
Size
15in H x ?in W
Growth
—
Care
Moderate
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Highlights
The Madness Series earns its name through prolific, early blooming and an impressive color range that spans over 20 distinct hues. Those 3-inch flowers emerge reliably on compact, mounded plants that stay naturally neat without excessive pruning, which is why they've become a go-to choice for gardeners who want high visual impact without high maintenance demands. Pelleted seeds make sowing easier and more precise, and the hybrid vigor means you'll see consistent performance across your garden.
Common Uses
These petunias are grown primarily for their ornamental impact in garden beds and borders, where their mounded form and continuous blooming create colorful edges and transitions. They excel in containers and hanging baskets, filling out quickly to create full, flower-covered displays. Their early maturity and long season of bloom make them popular for seasonal color schemes in public gardens, municipal plantings, and home landscapes.
Growing Timeline
No timeline data available yet for this variety.
Care Instructions
Start Indoors
Sow Madness Series petunia seeds indoors 6-8 weeks before your last spring frost. Press pelleted seeds onto moist seed-starting mix and keep them at 70-75°F with consistent moisture and bright light; they typically germinate in 7-10 days. Do not cover seeds with soil, as petunias need light to germinate.
Transplant Outdoors
Transplant seedlings outdoors after the last frost date when soil has warmed and nighttime temperatures remain above 50°F. Harden off seedlings by gradually exposing them to outdoor conditions over 7-10 days. Space plants 10 inches apart in garden beds or containers.
Pruning
Madness Series petunias benefit from deadheading spent flowers to encourage continuous blooming, though they're quite self-cleaning and will flower prolifically even without it. Pinch back seedlings when they're 3-4 inches tall to encourage branching and a fuller, more mounded form. As plants mature, light shearing in mid-summer can rejuvenate them if they become leggy.
Growing Calendar
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Companion Planting
Pests & Diseases
Ecology & Traits
Scientific Classification
Petunia x hybrida
Family
Solanaceae
Genus
Petunia
Growth Habit
Upright