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Riviera Blue
Riviera Series; annual (compact mounding)
At‑a‑glance
- Group/Class: Riviera Series; annual (compact mounding)
- Height × spread: ~5 in (13 cm) × ~8 in (20 cm)
- Bloom window: early spring to early summer; reblooms as temperatures cool
- Color & flower form: Blue, small two‑lipped flowers; many forms have a pale eye
- Fragrance: 0 none
- USDA hardiness: grown as annual in all zones
- Breeder / Year / Origin: PanAmerican Seed; year unknown; USA
- Pet safety: avoid
How it differs
- Far shorter and earlier than Great Blue Lobelia.
- Selected for uniform mounded habit rather than tall spikes.
- Bred for earlier flowering in spring compared with traditional bedding strains.
- Used as cool‑season color, not as a pond‑edge perennial.
Strengths
- Extra‑early flowering commonly reported for the Riviera Series.
- Neat, mounded habit for mass planting and containers.
- Cool‑weather performance with quick turnaround from transplant.
Care in one minute
Site and light: sun to part shade; afternoon shade where summers are hot.
Soil and pH: fertile, well‑drained but evenly moist soil; pH 5.5 to 6.5.
Watering: keep evenly moist; avoid water stress for steady bloom.
Feeding: light, regular feeding during active growth.
Grooming: deadhead lightly; shear after heat to refresh plants.
Overwintering: treat as an annual; discard after frost.
Watch‑outs
- Bloom pauses in summer heat; provide afternoon shade and water.
- Sensitive to drying out in containers.
- Frost tender; plant after danger of frost.
Best uses (tags)
Provenance note
An early‑type selection within the Riviera Series from PanAmerican Seed, bred for compact mounded plants and fast spring color.
References
- PanAmerican Seed – Riviera series plant information (Blue Eyes/Midnight Blue)
- Ball Seed – Riviera Sky Blue (series culture and specs)
- University of Florida IFAS Extension – Lobelia erinus (FP351)
- NC State Extension – Lobelia erinus
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