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Cardinal Flower

Lobelia cardinalis

outdoor

Lobelia cardinalis is a striking perennial featuring vibrant scarlet-red tubular flowers arranged on tall spikes that attract hummingbirds and butterflies. Native to moist North American habitats, it naturally thrives in wet meadows and streamside locations. The plant's brilliant color and wildlife-attracting properties make it invaluable for rain gardens and bog plantings.

Cardinal Flower

Common Problems

Select the problem your Cardinal Flower is experiencing to get a treatment guide.

Care Guide

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Light
Full sun to partial shade; performs best with at least 6 hours of direct sunlight daily
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Water
Consistently moist to wet soil required; ideal for boggy areas, streambanks, and rain gardens; do not allow to dry out
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Soil
Fertile, moisture-retentive soil rich in organic matter; tolerates acidic to neutral pH
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Fertiliser
Apply balanced fertilizer in spring and mid-summer; benefits from annual compost mulch
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Temperature
Cool to moderate temperatures; hardy perennial that appreciates protection in hot climates
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Humidity
High humidity preferred; naturally suited to wet environments and benefits from consistent moisture

Toxicity

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Non-toxic; safe for gardens with children and pets

Common Diseases

Common Pests

Seasonal Care

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Resume regular watering and feeding as growth picks up.

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Peak growing season. Water and feed regularly.

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Reduce watering as growth slows. Stop heavy feeding.

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Minimal watering and feeding. Protect from frost if needed.