treeN. America Native

Northern Catalpa

Catalpa speciosa

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Tree

Height

720 inches

Width

480 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8

Water

Medium

Humidity

Adaptable

Lifespan

50-70 years

Native To

Midwestern United States

Toxicity

Parts can be mildly toxic if ingested

The Story

Plant Bio

Catalpa speciosa is a large, fast-growing deciduous tree with a coarse texture, characterized by its huge heart-shaped leaves, showy panicles of orchid-like white flowers, and very long, bean-like seedpods. This native tree is known for its rugged character and tolerance of difficult urban conditions. Its late spring bloom is spectacular, and the long seedpods persist through winter, adding structural interest.

Bloom Period:

EarlyLate

Uses & Benefits:

The Northern Catalpa is a statement tree, offering a dramatic floral display in late spring, a coarse, tropical-looking texture from its huge leaves in summer, and an interesting winter silhouette with persistent seed pods.

Its wood is very rot-resistant and was historically used for fence posts and railroad ties. Today, its fast growth and dense canopy make it an effective shade tree, though its litter can be a maintenance consideration.

The flowers are a valuable nectar source for bees, butterflies, and hummingbirds. It is the sole host plant for the catalpa sphinx moth, whose caterpillars (catalpa worms) are a prized food source for birds and fish bait for anglers.

Marketplace

Where to Buy

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Planting

How to Grow

Select a site in full sun with moist, well-drained soil.
Ensure the location has ample space for its large mature size.
Dig a hole two to three times wider than the root ball.
Place the tree so its root flare is at or just above ground level.
Backfill with native soil and water deeply.
Mulch around the base to conserve moisture, keeping it off the trunk.

Pro Tip

Give it plenty of room to grow. This is a large tree that can create significant litter from flowers, leaves, and seedpods.

Keep It Thriving

Care Guide

Do

Water regularly during the first few years to establish a deep root system.
Prune young trees to encourage a good structure.
Accept its somewhat 'messy' nature; the litter is part of its character.
Plant it where its large leaves and bold form can be appreciated.

Don't

Don't plant it in a small yard, near a patio, or under power lines.
Avoid planting where the falling flowers and seedpods will be a nuisance.
Don't top the tree; it ruins its natural form.
Don't be alarmed by catalpa worms; healthy trees usually recover from defoliation.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Pest Check
Prune
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Fast-growing shade tree for large landscapesBold specimen tree for parks and institutional groundsTolerant choice for tough, open areas

Companion Plants

Viburnum prunifolium Cornus amomum Physocarpus opulifolius Panicum virgatum Asimina triloba

Multiply

Propagation Methods

Good to Know

Common Questions

Northern Catalpa questions

What zones can Northern Catalpa grow in?

Northern Catalpa is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Northern Catalpa deer resistant?

Yes — Northern Catalpa is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Northern Catalpa bloom?

Northern Catalpa typically blooms in late spring through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Northern Catalpa need full sun?

Northern Catalpa does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Northern Catalpa drought tolerant?

Yes — once established (usually after the first full season), Northern Catalpa handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.