Cascade of Color Trailing Lobelia is a half-hardy annual flower that transforms hanging baskets, containers, and window boxes into cascading waterfalls of delicate blooms. This cultivar of Lobelia erinus thrives in USDA zones 10 to 11, though gardeners in cooler regions can easily grow it as a seasonal annual by starting seeds indoors 8 to 10 weeks before their last frost date. The trailing habit creates a fountain effect perfect for high-visibility plantings, while its preference for full sun to partial shade makes it adaptable to various garden positions. With germination temperatures of 60 to 70 degrees Fahrenheit and soil pH between 6.0 and 7.0, this variety responds well to careful seed starting.
Partial Sun
—
10-11
?in H x ?in W
—
Moderate
Hover over chart points for details
Lobelia erinus cultivars are prized for their abundant, delicate flowers that cascade gracefully over container edges, creating a jewel-like effect from early summer through fall. The trailing growth habit develops naturally without requiring pinching or aggressive pruning, making it exceptionally low-maintenance once established. Seeds are tiny and require only a gentle press into the soil surface to germinate, and indoor starting is recommended to ensure strong transplants ready for warm weather.
Cascade of Color Trailing Lobelia is grown as an ornamental flowering plant, most commonly in hanging baskets, window boxes, and container gardens where its cascading growth habit can be displayed to full effect. The delicate flowers also work well as trailing accents in mixed containers alongside upright plants, or in window planters where they soften hard architectural edges.
No timeline data available yet for this variety.
Start seeds indoors 8 to 10 weeks before your average last frost date. Maintain soil temperature at 60 to 70 degrees Fahrenheit for optimal germination. Press seeds lightly into the soil surface without covering, as light is beneficial for germination. In mild climates, you can also sow seeds outside 1 to 2 weeks after the last frost date, or sow in late summer for winter color.
Transplant hardened-off seedlings outdoors after all danger of frost has passed and soil has warmed. Timing should align with 1 to 2 weeks after your average last frost date. Space plants appropriately for their mature trailing habit in containers or garden beds.
Direct sow outdoors 1 to 2 weeks after your average last frost date. In mild climates, direct sowing in late summer is an option for winter color production.
Enter your ZIP code to see a personalized growing calendar for this plant.