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Southern Catalpa (Catalpa bignonioides), Tree
Tree

Southern Catalpa

Catalpa bignonioides

Varieties We Bring In

StandardCatalpa bignonioides
Sizes & Pricing
3 galFrom$24.95

Last received Mar 9, 2026.

We bring this in seasonally, so what is on the lot changes week to week. A received date shows when it last came in, not that it is here today.

Call (904) 471-0440 to confirm this plant and size before you make the trip.

LightFull Sun
WaterModerate
Mature size30-40 feet × 40-50 feet

Pet toxicity: not on file, check before planting where pets chew

Pet safety guide

About Southern Catalpa

Southern Catalpa (Catalpa bignonioides) is a bold deciduous tree native to the southeastern United States, recognized by its enormous heart-shaped leaves, showy white flower clusters with purple and yellow markings, and long slender bean-like seed pods. It forms a wide, irregular canopy and has long been planted as a shade and ornamental tree.

Plant details

Bloom Season
Spring, Summer
Flower Color
White
Growth Rate
Fast
Foliage
Deciduous
Soil
Sandy, Loam, Clay, Acidic, Alkaline, Well-drained

Best planting months

Recommended forZone 9b · St. Augustine, FL

Recommended months: January, February, March, October, November, December.

January, good window
February, good window
March, good window
April, other month
May, other month
June, other month
July, other month
August, other month
September, other month
October, good window
November, good window, this month
December, good window
This monthGood windowOther months

Seasonal care

Bloom season. New foliage emerges. Good planting window.

Care essentials

Light

Plant in full sun for best flowering and canopy development. Catalpa tolerates partial shade but blooms most heavily with at least 6 hours of direct sun.

Water

Water regularly during establishment; once established, Southern Catalpa tolerates heat and short droughts well, though foliage may scorch and drop in extended dry spells in NE Florida summers. Moderate supplemental irrigation during droughts is beneficial.

Soil & Fertilizer

Adaptable to a wide range of soils — sandy, loam, clay, acidic to slightly alkaline — provided drainage is adequate. Amend NE Florida sandy soils with compost at planting. Fertilize lightly in spring with a balanced slow-release fertilizer; avoid over-fertilizing, which promotes lush but weak growth.

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Common questions

Is Southern Catalpa a good plant for St. Augustine?

Southern Catalpa is a tree. Mature size: 30-40 feet × 40-50 feet. Light: Full Sun. Water needs: Moderate. Southern Catalpa is native to Florida. Recorded hardiness zone: 9a.

Care information verified from

Last reviewed February 2026. Our care guidance comes from trusted horticulture sources and decades of helping St. Augustine gardeners. Conditions here can vary dramatically from one area to the next, so come ask us and we'll tailor it to your yard.