Lobelia cardinalis

Cardinal Flower

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A vibrant perennial native to North American wetlands, featuring lance-shaped leaves and striking scarlet-red flower spikes in late summer.
yard Outdoor plants wb_sunny Half-shade / Sun pets Not pet-safe
info Pot sizes shown are estimations. Real dimensions may vary depending on the merchant.
Merchant Pot Size Availability Price
Amazon.com 1-2 in In Stock $5.95 Buy
Merchant Pot Size Availability Price
Amazon.com 2-3 in Out of Stock $11.99 Buy
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Plant Details

Common Name Cardinal Flower
Family Campanulaceae
Genus Lobelia
Species Cardinalis
Origin North America
Blooming Late summer to autumn, vibrant red spikes.
Leaf Color Bright green
Sunlight Half-shade / Sun
Category Outdoor plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Rich, moisture-retentive soil; peat or clay mix; tolerates boggy conditions.

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Watering

High water needs; keep soil consistently moist to wet; does not tolerate drought.

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Sunlight & Care

Full sun for best color and bloom density; partial shade in hot climates prevents scorching.

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Fertilization

Apply balanced liquid fertilizer monthly during active growth; reduce in late summer.

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Pruning

Deadhead spent blooms to extend flowering season; cut back stems after first frost.

Pest Control Aphid Leaf Miner Slug Snail

These are the insects and pathogens that commonly interact with this plant, including pests, parasites, and organisms typically associated with its care.

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Seasonal Periods

local_florist Flowering Period 3 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
eco Leaf Persistence 12 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
thermostat

Growing Parameters

thermostat
Temperature
-40° – 95°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
60% – 95%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
1000 – 30000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
1200 – 4500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
water
Soil Moisture
40% – 85%
% volumetric
Water content in the growing medium
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Soil EC
300 – 1500
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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