Lobelia Erinus Riviera Blue Splash

Lobelia Erinus Riviera Blue Splash Seeds

(Compact Mounded Edging Lobelia — White with Blue Splash, Extra-Early, Riviera Series)

The compact habit makes for a great splash of color in flower beds and mixed combinations. The extra early-flowering series blooms about 15 days earlier than standard varieties, with ball-shaped plants that stay compact and mounded, perfect for beds, borders, containers, and color bowls.

Riviera Blue Splash shares its distinctive reverse-bicolor pattern with Regatta Blue Splash — white petals marked with blue throat and blue splashing — but brings this pattern to a fundamentally different plant form. Where Regatta Blue Splash trails and cascades from basket and container edges as a “spiller,” Riviera Blue Splash forms a mounded plant habit with striking blue and white blooms that create a stunning visual impact in flower beds and mixed combinations.

The unique color combination — white with a blue throat and picotee-type markings — is a standout within the Riviera series. The picotee character — blue markings at the margins and throat of a white flower — creates an impressionistic, watercolor-splashed quality lighter and more painterly than any solid-color lobelia. In a massed border planting, the overall effect at distance reads as a cool silver-blue haze; up close, the individual flower pattern reveals its intricate detail and charm.

Riviera Blue Splash looks great in containers and close-up landscapes. The bicolor white-and-blue pattern rewards close viewing in a way that solid-color varieties do not — making it particularly well suited to intimate container plantings on patios, balconies, and terraces where plants are observed at short range.

Within the Riviera series at myorganicworld.net, Blue Splash occupies the same unique visual niche as in the Regatta series — the lightest, most open and airy pattern in the range, distinct from the solid colors of Rose and Midnight Blue, and functioning as a visual bridge and harmonizer between stronger adjacent colors in mixed plantings.

Riviera Blue Splash vs Regatta Blue Splash — Key Differences

Both varieties share the same white-with-blue-splash flower pattern. The fundamental difference is growth habit and series. Regatta Blue Splash is a trailing pendula variety — it cascades from basket and container edges as a “spiller.” Riviera Blue Splash is a compact mounded upright variety — it forms neat ball-shaped mounds for border edging and container filling as a “filler.” Choose Regatta Blue Splash for hanging baskets and cascading container edges; choose Riviera Blue Splash for structured mounded border edging, mass bedding, and container centers.

Variety Details

• Variety: Riviera Blue Splash
• Series: Riviera
• Breeder: PanAmerican Seed
• Species: Lobelia erinus
• Family: Campanulaceae
• Flower color: White with blue throat and blue picotee-type splash markings — reverse bicolor
• Height: 10–15 cm
• Spread: 20–25 cm
• Habit: Compact, ball-shaped, mounded — upright bedding/edging type
• Germination: 14–21 days at 18–24°C with light
• Early flowering: ~15 days earlier than standard varieties

Key Features

• Riviera series from PanAmerican Seed — extra-early flowering compact bedding lobelia.
• Unique white with blue throat and picotee splash — reverse bicolor pattern unlike any solid lobelia.
• Lightest, most airy pattern in the Riviera collection — painterly watercolor quality.
• Extra-early flowering — approximately 15 days ahead of standard varieties.
• Vigorous compact ball-shaped mounded habit — uniform, self-supporting.
• Attractive bicolored flowers ideal for close-up container and border displays.
• Frost tolerant cool-season thriver — ideal for Gulf autumn through spring.
• Visual bridge and harmonizer between stronger adjacent colors in mixed plantings.
• Attracts beneficial insects and pollinators.

Plant Information

• Plant type: Tender annual
• Sun: Full sun to partial shade — afternoon shade extends display in hot climates
• Soil: Fertile, moist, well-drained, pH 5.5–6.5
• Water: Keep evenly moist — avoid water stress for steady bloom
• Spacing: 10–15 cm apart; plant in groups of 3–5 seedlings

Seed Germination

• Seed depth: Surface sow — press lightly; do NOT cover; light required for germination
• Germination time: 14–21 days at 18–24°C; sowing to flowering approximately 16 weeks
• Ideal germination temperature: 18–24°C
• All germination requirements identical to Riviera Rose and Riviera Midnight Blue. Surface sow on moist, fine, well-drained seed-starting mix.
• Mix seeds with fine sand for even distribution. Press lightly without covering.
• Water from below where possible. Keep consistently moist at 18–24°C throughout germination.
• Transplant in small clumps of 3–5 seedlings per position.

Growing Tips

• All growing requirements identical to Riviera Rose and Riviera Midnight Blue.
• Start 8–10 weeks before desired transplanting date.
• Transplant in clumps of 3–5 seedlings 10–15 cm apart in full sun to partial shade.
• Lobelias flower more freely when daylength is longer than 12 hours. Lighting plants when days are shorter than 12 hours speeds flowering. Light shading helps produce a better crop when plants are growing under hot weather.
• In Gulf conditions during short-day autumn months, supplemental lighting extending the day to 12+ hours maximizes the early-flowering advantage of the Riviera series.
• The white-with-blue-splash pattern is particularly effective in close-up plantings — window boxes, trough planters, patio containers, and terrace pots where the intricate bicolor detail can be appreciated at short range.
• At planting distance in mass border schemes, the overall effect reads as a cool, luminous blue-white haze that brightens shaded positions and lightens visually heavy color combinations.
  Keep consistently moist.
• Feed every 2–3 weeks with balanced liquid fertilizer.
• Cut back by half if flowering slows in warming spring temperatures.

Complete Riviera Series Positioning — Gulf Collection

• The four Riviera series varieties at myorganicworld.net now form a complete and complementary upright compact collection: Riviera Rose (warm magenta-pink, boldest and most assertive), Riviera Midnight Blue (deepest navy-midnight, darkest and most intense), Riviera Blue Splash (white with blue splashing, lightest and most airy), alongside Crystal Palace (deep blue-violet on bronze foliage, RHS AGM). Together these cover a full spectrum from darkest to lightest, from warm to cool, from solid to splashed — providing every visual role needed for border edging, mass planting, and container filling throughout the Gulf cool season.

Gulf Planting Season

• Best sowing time in the Gulf: August–September (indoors)
• Transplanting: October–November
• Expected flowering: November–March (extra-early advantage — ~15 days before standard varieties; approximately 16 weeks from sowing to flowering)
• Note: White-with-blue-splash pattern particularly effective in close-up container plantings. Day-length extension above 12 hours with supplemental lighting maximizes early flowering advantage during short Gulf autumn days.

Garden and Container Uses

• Border edging — white-with-blue-splash pattern creates luminous, airy cool display
• Close-up containers — intricate bicolor pattern best appreciated at short range
• Window boxes and trough planters — detail-forward planting
• Mass bedding — cool silver-blue haze effect at planting distance
• Container filling — lightest, most airy “filler” in mixed Riviera container designs
• Rock gardens and raised beds
• Paired with Riviera Midnight Blue for dramatic light/dark blue contrast
• Paired with Riviera Rose for cool/warm bicolor border combinations
• Visual harmonizer in all mixed-color lobelia displays
• Pollinator-friendly — attracts beneficial insects and butterflies