Catalpa
Catalpa bignonioides
treeverifiedReviewed by the GreenScout Team
A large deciduous tree native to North America, prized for its heart-shaped leaves and showy white or pale yellow flowers with purple spots that bloom in late spring. The Catalpa reaches 40–60 feet tall and produces long, slender bean-like seed pods in summer. It thrives in sunny locations with adequate space and is popular in parks and large gardens.
Common Problems
Select the problem your Catalpa is experiencing to get a treatment guide.
Care Guide
light_mode
Light
Full sun (6+ hours) for optimal growth and flowering; can tolerate partial shade
water_drop
Water
Water regularly during establishment; once mature, it is drought-tolerant and prefers moderate moisture during the growing season
compost
Soil
Adaptable to various soils including clay, loam, and sandy soils; prefers slightly acidic to neutral pH (6.0–7.5)
science
Fertiliser
Minimal fertilization needed; apply balanced fertilizer in spring if growth is slow or soil is poor
thermometer
Temperature
Cold-hardy; requires moderate winter chill; thrives in warm to hot summers
humidity_percentage
Humidity
Tolerates various humidity levels; good air circulation helps reduce fungal issues
Toxicity
check_circleSafe for Catscheck_circleSafe for Dogscheck_circleSafe for Children
Non-toxic; seed pods and all parts are safe, though not palatable
Common Diseases
Common Pests
Seasonal Care
local_floristspring
Resume regular watering and feeding as growth picks up.
light_modesummer
Peak growing season. Water and feed regularly.
ecoautumn
Reduce watering as growth slows. Stop heavy feeding.
ac_unitwinter
Minimal watering and feeding. Protect from frost if needed.
More from GreenScout
assignmentwater_dropmapcomparedangerousarticle
Get a personalised care plan
AI-generated for your plant
Watering calculator
How often should you water?
Find your USDA zone
Check if this plant suits your climate
Compare this plant
Side-by-side with similar species
Toxicity guide
Safe for pets and children?
Plant care articles
Expert guides and how-tos