Grow guide
How to grow Cardinal Flower
Lobelia cardinalis
- Type
- Perennial flower
- Zones
- USDA zones 3–9
- Sun
- Partial
- Time to harvest
- 365–548 days
- Spacing
- 18″ apart
- Density
- 1 per sq ft
- Habit
- Upright
- Frost tolerance
- Hardy
- Sowing
- Start indoors, then transplant
- Start indoors
- 8 weeks before last frost
Care
- Water 2x/week in season
- Deadhead As needed
- Mulch Annual
Notes
Blazing red 2-3 ft spikes July-September; primary ruby-throated hummingbird nectar plant; surface-sow seeds needing light; blooms year 2 from seed.
More perennial flower varieties
Grows well nearby
Track Cardinal Flower from seed to harvest with Evengrow.
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