White Double Petunia is a heirloom cultivar of Petunia hybrida with large, ruffled double blooms in pure white that bring sophisticated elegance to any garden space. Bred by the Cerný family over five generations, this vigorous, mounded variety reaches blooming maturity in 70-85 days and thrives in full sun across hardiness zones 2-11. Its continuous flowering habit and low-maintenance character make it a rewarding choice for gardeners seeking graceful, pristine beauty from midsummer through frost.
Full Sun
Moderate
2-11
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Moderate
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Those ruffled double blooms are genuinely striking, especially when sunlight catches the layered petals. The Cerný family spent five generations perfecting this variety, and that dedication shows in how vigorously it grows and how relentlessly it blooms. Plant it in a container or garden bed and watch it deliver sophisticated white color all season long with minimal fussing.
White Double petunias serve as ornamental flowers for containers, hanging baskets, and garden beds, where their vigorous mounded growth and continuous blooms create striking visual displays throughout the growing season.
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Start seeds indoors 6-8 weeks before your last frost date. Sow seeds on moist seed-starting mix and maintain temperatures between 70-80°F for germination. Petunias need light to germinate, so press seeds gently into soil without covering them, or cover very lightly with clear plastic to retain moisture while allowing light penetration. Keep the soil consistently moist but not waterlogged during germination.
Transplant seedlings outdoors after the last frost date when soil has warmed to at least 60°F. Harden off seedlings by gradually exposing them to outdoor conditions over 7-10 days before planting. Space plants 10 inches apart in full sun locations.
Pinch back young seedlings when they reach 3-4 inches tall to encourage the mounded, branching habit. Deadhead spent blooms regularly throughout the season to promote continuous flowering and maintain plant shape.
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“White Double emerged from the careful, multi-generational work of the Cerný family, who dedicated five generations to developing and refining this petunia. Their commitment to quality and beauty resulted in a variety that balances the delicate elegance of double blooms with the practical vigor needed for reliable garden performance. This heirloom represents not just a flower, but a family's horticultural legacy passed down through time.”