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Publication #ENH245

Asimina triloba: Pawpaw1

Edward F. Gilman and Dennis G. Watson2

Introduction

A native deciduous tree, the coarse-textured Pawpaw ultimately reaches 30 feet in height (more commonly 15 to 20 feet) with an equal spread, and creates an upright, wide pyramidal silhouette. The large, dark green leaves, 6 to 12 inches in length and three to five inches wide, seem to droop from their weight at branch tips, giving the plant a distinctive, almost wilted appearance. Leaves turn a sometimes-brilliant yellow before dropping in the fall. The two-inch-wide purple flowers with the less-than-pleasant perfume appear before the leaves unfurl in springtime, and are followed by the production of unusual, fleshy, three to five-inch-long, round or oval fruits, green when young but ripening to a brown/black, wrinkled texture. When fully ripe, the edible flesh becomes soft, almost custard-like, has a sweet, rich taste similar to bananas, and is surprisingly very nutritious. The fruits are popular with man and wildlife, especially raccoons and birds.

Figure 1. 

Young Asimina triloba: Pawpaw


[Click thumbnail to enlarge.]

General Information

Scientific name: Asimina triloba
Pronunciation: uh-SIM-min-nuh try-LOE-buh
Common name(s): Pawpaw
Family: Annonaceae
USDA hardiness zones: 5A through 8B (Fig. 2)
Origin: native to North America
Invasive potential: little invasive potential
Uses: reclamation; specimen; fruit
Availability: not native to North America

Figure 2. 

Range


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Description

Height: 15 to 20 feet
Spread: 15 to 20 feet
Crown uniformity: symmetrical
Crown shape: upright/erect, round
Crown density: moderate
Growth rate: moderate
Texture: coarse

Foliage

Leaf arrangement: alternate (Fig. 3)
Leaf type: simple
Leaf margin: entire
Leaf shape: obovate, oblong
Leaf venation: pinnate
Leaf type and persistence: deciduous
Leaf blade length: 4 to 8 inches, 8 to 12 inches
Leaf color: green
Fall color: yellow
Fall characteristic: showy

Flower

Flower color: purple
Flower characteristics: not showy

Fruit

Fruit shape: elongated
Fruit length: 3 to 6 inches
Fruit covering: fleshy
Fruit color: brown, black
Fruit characteristics: attracts birds; showy; fruit/leaves a litter problem

Trunk and Branches

Trunk/bark/branches: branches droop; not showy; typically multi-trunked; thorns
Pruning requirement: needed for strong structure
Breakage: resistant
Current year twig color: brown
Current year twig thickness: medium
Wood specific gravity: unknown

Culture

Light requirement: full sun, partial sun or partial shade, shade tolerant
Soil tolerances: clay; sand; loam; acidic; slightly alkaline; occasionally wet; well-drained
Drought tolerance: moderate
Aerosol salt tolerance: unknown

Other

Roots: not a problem
Winter interest: no
Outstanding tree: yes
Ozone sensitivity: unknown
Verticillium wilt susceptibility: resistant
Pest resistance: free of serious pests and diseases

Figure 3. 

Foliage


[Click thumbnail to enlarge.]

Use and Management

The Pawpaw tree will grow in full sun or dense shade but will have denser growth in the sun. Branches arch and reach to the sun in shaded sites often creating an open, irregularly-shaped canopy. The soil should be rich, moist and slightly acid, and the trees will even tolerate wet, soggy soils. It can be found in multi-stemmed thickets along stream banks and on flood plains in the wild. The tree is probably best used in a natural area for stabilizing stream banks and to add yellow fall color to a landscape. It also makes a great coarse-textured specimen.

Propagation is by seeds, layerings, or root cuttings.

Pests and Diseases

No pests or diseases are of major concern.

Footnotes

1.

This document is ENH245, one of a series of the Environmental Horticulture, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date November 1993. Revised December 2006. Reviewed May 2011. Visit the EDIS website at http://edis.ifas.ufl.edu.

2.

Edward F. Gilman, professor, Environmental Horticulture Department; Dennis G. Watson, former associate professor, Agricultural Engineering Department, Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611.


The Institute of Food and Agricultural Sciences (IFAS) is an Equal Opportunity Institution authorized to provide research, educational information and other services only to individuals and institutions that function with non-discrimination with respect to race, creed, color, religion, age, disability, sex, sexual orientation, marital status, national origin, political opinions or affiliations. For more information on obtaining other UF/IFAS Extension publications, contact your county's UF/IFAS Extension office.

U.S. Department of Agriculture, UF/IFAS Extension Service, University of Florida, IFAS, Florida A & M University Cooperative Extension Program, and Boards of County Commissioners Cooperating. Nick T. Place, dean for UF/IFAS Extension.