The Double Cascade Blue Petunia is a stunning large double-flowered hybrid that brings layered, ruffled blooms in rich blue tones to containers, hanging baskets, and garden beds from summer through frost. Bred for a compact growth habit and reliable performance across hardiness zones 6 through 11, this F1 hybrid germinates quickly under warm conditions (70-80°F) and reaches flowering in 70 to 84 days from seed. Its double blooms and cascading tendency make it especially effective spilling from baskets and window boxes, where moderate watering and bright light keep it flowering prolifically.
—
Moderate
6-11
?in H x ?in W
—
Moderate
Hover over chart points for details
Large double flowers with a ruffled, layered form set this petunia apart from single-flowered varieties, creating a fuller, more luxurious appearance in any container. The compact growth habit combined with a cascading tendency means it fills hanging baskets and window boxes with bloom without becoming leggy or overgrown. Starting from seed indoors gives you control over timing and abundance, with flowers ready to display just 10-12 weeks after sowing.
The Double Cascade Blue Petunia excels in containers of all kinds, from hanging baskets and window boxes to traditional pots on patios and decks. Its compact, trailing growth makes it a natural choice for ground cover in garden beds, and it performs reliably in landscape plantings where you want continuous color from midsummer until the first hard frost.
No timeline data available yet for this variety.
Sow seeds 4 to 6 weeks before your transplant-out date for 128 to 288-cell flats, or 6 to 8 weeks ahead if using larger cells or seedling containers. Apply a thin layer of vermiculite over the seeds to hold them in place, but do not bury them completely, as light aids germination. Keep the soil surface moist to help dissolve the seed coating on pelleted seeds. After germination, maintain an average temperature range of 60 to 75°F for best results. Harden off seedlings by gradually exposing them to outdoor conditions over 7 to 10 days before transplanting.
Transplant seedlings outdoors after the last frost date once soil has warmed and hardening off is complete. Space plants 12 inches apart in containers or garden beds. Ensure soil is well-draining and amended with compost if necessary. Water gently after transplanting and keep soil consistently moist (not waterlogged) during the first two weeks as plants establish.
Enter your ZIP code to see a personalized growing calendar for this plant.