Double Cascade Bold Petunia is a striking F1 hybrid that brings abundant, large double flowers to gardens and containers across hardiness zones 2 through 11. This newcomer to the petunia world grows with a compact, trailing habit that cascades beautifully from hanging baskets and window boxes, reaching flowering stage in 70 to 84 days from seed. The double blooms set it apart from standard petunias, offering a fuller, more ornate appearance that commands attention in any planting scheme.
—
Moderate
2-11
?in H x ?in W
—
Moderate
Hover over chart points for details
Large double-flowered petunias are still relatively uncommon in seed catalogs, making this F1 hybrid a genuine novelty for gardeners seeking something beyond the typical single-bloom varieties. The compact growth habit combined with a naturally cascading tendency means you get both tidy, manageable plants and the generous flower production that makes petunias such reliable performers. Its cold tolerance through zone 2 and heat resilience through zone 11 give it an unusual range, while the quick 70 to 84-day path to flowering means you'll have blooms by mid-summer even in cooler climates.
Double Cascade Bold Petunia thrives in containers of all kinds, from hanging baskets and window boxes where its cascading growth becomes a living waterfall of blooms, to traditional garden beds and landscape plantings. Its compact habit and ground-cover potential make it equally at home spilling over raised beds or softening the edges of borders.
No timeline data available yet for this variety.
Sow seeds 4 to 6 weeks before your target planting-out date if using standard 128 to 288-cell trays, or 6 to 8 weeks ahead if starting in larger cells or seedling containers. Apply only a thin layer of vermiculite over seeds and do not bury them completely, as light is essential for germination. Keep the soil surface consistently moist to help dissolve the seed coating if using pelleted seed. Germinate at 70 to 80°F, then after sprouting, maintain temperatures between 60 to 75°F for strongest seedling development.
Harden off seedlings by gradually exposing them to outdoor conditions over 7 to 10 days before transplanting. Move them outdoors once nighttime temperatures consistently stay above 50°F and frost danger has passed. Space plants 12 inches apart in their final location.
Pinch back young transplants once they have developed 2 to 3 sets of true leaves to encourage branching and a fuller, more compact shape. Light deadheading of spent blooms will extend flowering, though the compact growth habit and heavy flower production mean maintenance pruning is minimal once plants are established.
Enter your ZIP code to see a personalized growing calendar for this plant.