Catalpa speciosa

Northern Catalpa

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Large deciduous tree with heart-shaped leaves and fragrant white flowers spotted purple, native to North American river valleys.
yard Outdoor plants wb_sunny Shade / Half-shade pets Pet Friendly
info Pot sizes shown are estimations. Real dimensions may vary depending on the merchant.
Merchant Pot Size Availability Price
Amazon.com 5-6 in In Stock $14.99 Buy
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Plant Details

Common Name Northern Catalpa
Family Bignoniaceae
Genus Catalpa
Species Speciosa
Origin United States (Missouri/Arkansas)
Blooming Late spring to early summer, large white bell-shaped flowers with purple and yellow spots.
Leaf Color Bright green (turns yellow in autumn)
Sunlight Shade / Half-shade
Category Outdoor plants
Pet Friendly check Yes
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Care & Maintenance

terrain
Soil

Deep, fertile, well-drained loamy soil; tolerates clay and alkaline conditions.

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Watering

Regular watering until established; drought tolerant once mature, prefers moist soil during dry spells.

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Sunlight & Care

Requires full sun for optimal flowering; young plants tolerate partial shade but may become leggy.

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Fertilization

Apply balanced slow-release fertilizer in early spring before new growth begins.

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Pruning

Prune deadwood or shape crown in late winter/early spring while dormant to encourage structure.

Pest Control Aphid Catalpa Borer Scale Insect Tent Caterpillar

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 8 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
thermostat

Growing Parameters

thermostat
Temperature
-31° – 100°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
40% – 75%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
2000 – 45000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
500 – 2500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
water
Soil Moisture
20% – 65%
% 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 speciosa? Select a symptom to diagnose and fix the issue.

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