Catalpa bignonioides

Southern Catalpa

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Deciduous tree featuring large heart-shaped leaves and fragrant white flowers with purple/yellow spots, developing long cigar-like seed pods in autumn.
yard Outdoor plants wb_sunny Half-shade / Sun pets Not pet-safe
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Plant Details

Common Name Southern Catalpa
Family Bignoniaceae
Genus Catalpa
Species Bignonioides
Origin Southeastern United States
Blooming Late spring to early summer, ornamental foliage year-round when active
Leaf Color Bright green turning yellow in autumn
Sunlight Half-shade / Sun
Category Outdoor plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Well-drained loamy soil, tolerates clay and drought once established

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Watering

Deep watering during establishment, moderate thereafter. Drought tolerant.

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Sunlight & Care

Full sun preferred for best flowering, tolerates partial shade but may become leggy

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Fertilization

Apply balanced slow-release fertilizer in spring before growth begins

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Pruning

Prune after flowering to maintain shape; remove dead wood and seed pods in late winter

Pest Control Aphid Catalpa Sphinx Moth Scale Insect

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 2 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
eco Leaf Persistence 8 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
thermostat

Growing Parameters

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Temperature
-22° – 104°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
20% – 90%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
15000 – 60000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
1000 – 2500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
water
Soil Moisture
10% – 75%
% volumetric
Water content in the growing medium
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Soil EC
300 – 1800
mS/cm
Electrical conductivity (nutrient concentration in soil water)
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Common Problems

Something wrong with your Catalpa bignonioides? Select a symptom to diagnose and fix the issue.

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