Lobelia
Lobelia x hybrida
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Annual
Height
6 inches
Width
18 inches
Light
Full Sun, Partial Sun
Water
Moderate
Humidity
Moderate
Lifespan
Tender perennial, grown as an annual
Native To
Southern Africa
Toxicity
Toxic if ingested
The Story
Plant Bio
Lobelia x is known for its striking blue flowers and is often used in garden beds and containers. This hybrid variety has a longer blooming season compared to other Lobelia species.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
We couldn't find this plant listed online right now.
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Planting
How to Grow
- Tuck seeds into moist soil in early spring for best germination.
- Mist cuttings regularly to maintain humidity and promote rooting.
- Plant in well-draining soil with partial sun exposure for optimal growth.
- Fertilize monthly with a balanced water-soluble fertilizer during the growing season.
- Pinch back stems to encourage bushier growth and remove spent flowers.
- Water consistently, keeping soil moist but not waterlogged.
Pro Tip
Use a peat-based potting mix and provide morning sun for vibrant blooms.
Keep It Thriving
Care Guide
Do
- Water regularly to keep soil evenly moist 🌱
- Deadhead spent flowers to promote continuous blooming
- Feed with a balanced fertilizer monthly during active growth
Don't
- Avoid overwatering to prevent root rot ❌
- Do not let soil dry out completely
- Avoid placing in full, harsh sunlight which can scorch leaves
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Fertilize | ||||||||||||
| Pest Check | ||||||||||||
| Pinch | ||||||||||||
| Plant | ||||||||||||
| Prune |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Lobelia questions
What zones can Lobelia grow in?
Lobelia is hardy in USDA Zone 10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Lobelia deer resistant?
Not reliably. Deer may browse Lobelia, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Lobelia bloom?
Lobelia typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Lobelia need full sun?
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
Fan Cinnabar Rose Lobelia
Lobelia x speciosa 'Fan Cinnabar Rose'
Lilac Candles Great Blue Lobelia
Lobelia siphilitica 'Lilac Candles'
Hybrid Cardinal Flower
Lobelia x speciosa 'Compliment Violet'
Cardinal Flower 'Black Truffle'
Lobelia cardinalis 'Black Truffle'
Cardinal Flower Deep Rose
Lobelia cardinalis 'Deep Rose'
Keep exploring
Explore the genus
Collections featuring this plant
Hardy in your zone?
Grow 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.
