Species
Lobelia erinusEdging Lobelia10 other cultivars
‘Starship Scarlet Bronze Leaf’Starship Scarlet Lobelia
‘Scarlet Princess’Scarlet Princess Edging Lobelia
‘Starship Rose’Starship Rose Cardinal Flower
‘Monsoon’Monsoon Lobelia
‘Dark Blue’Dark Blue Trailing Lobelia
‘Fountain White’Fountain White Lobelia
‘Fountain Blue’Fountain Blue Lobelia
‘Fountain Rose’Edging Lobelia
‘Laguna Cloud White’Laguna Cloud White Lobelia
‘Laguna Sky Blue’Laguna Sky Blue Lobelia
The Story
Plant Bio
Lobelia erinus 'Laguna Dark Blue' is a trailing annual plant known for its dense clusters of small, tubular flowers in a striking dark blue hue, complemented by fine, green foliage.
This cultivar is prized for its vibrant, deep blue flowers that create a stunning contrast and are particularly attractive in hanging baskets and garden borders.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Perennial
Height
8 inches
Width
18 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8, 9, 10
Water
Moderate
Humidity
Average
Lifespan
Annual
Native To
Southern Africa
Toxicity
Toxic if ingested
Bloom period
Summer – Late summer
In flower about 2 months of the year
Planting
How to Grow
- Tuck seeds into moist soil in early spring.
- Keep soil consistently moist for best germination.
- Place in full sun for vibrant blooms.
- Water regularly during hot weather.
- Pinch back to promote bushier growth after flowering.
- Divide every 2-3 years in early spring.
Pro Tip
Ensure well-draining soil and full sun to maximize flowering.
Keep It Thriving
Care Guide
Do
- Water regularly during dry spells 🌱
- Deadhead spent flowers to encourage continuous blooming
- Mulch to retain soil moisture
Don't
- Avoid overwatering to prevent root rot ❌
- Don’t let soil dry out completely
- Avoid heavy fertilization which can reduce flowering
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Pest Check | ||||||||||||
| Pinch | ||||||||||||
| Plant |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Multiply
Propagation Methods
Good to Know
Common Questions
Laguna Dark Blue Lobelia questions
What zones can Laguna Dark Blue Lobelia grow in?
Laguna Dark Blue Lobelia is hardy in USDA Zones 4–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Laguna Dark Blue Lobelia deer resistant?
Not reliably. Deer may browse Laguna Dark Blue Lobelia, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Laguna Dark Blue Lobelia bloom?
Laguna Dark Blue Lobelia typically blooms in summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Laguna Dark Blue Lobelia need full sun?
Laguna Dark Blue Lobelia does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
More Lobelia to compare
Cardinal Flower
Lobelia cardinalis
Hybrid Cardinal Flower
Lobelia speciosa 'Compliment Violet'
Lilac Candles Great Blue Lobelia
Lobelia siphilitica 'Lilac Candles'
Cardinal Flower 'Black Truffle'
Lobelia cardinalis 'Black Truffle'
Fan Cinnabar Rose Lobelia
Lobelia speciosa 'Fan Cinnabar Rose'
Perrys White Cardinal Flower
Lobelia cardinalis 'Perrys White'
Keep exploring
Explore the genus
Grow Laguna Dark Blue Lobelia with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.