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Florida Trees: Coccoloba Uvifera : Seagrape Edward F. Gilman and Dennis G. Watson2 UF/IFAS reprint

Large Seagrape images

Coccoloba uvifera: Seagrape1

Edward F. Gilman and Dennis G. Watson2

Introduction

Reaching a height of 25 to 30 feet, Seagrape can take on a variety of shapes, depending upon its location but typically forms a multi-stemmed vase shape if left unpruned. The large, almost circular, broad, leathery, evergreen leaves of Seagrape have distinctive red veins. The leaves frequently turn completely red before they fall in winter. The new young foliage is a beautiful bronze color which is set off nicely against the dark green, shiny leaves. The inconspicuous ivory flowers are produced on foot-long racemes and are followed by dense clusters of 3/4-inch diameter green grapes on female trees only, ripening to a luscious deep purple in late summer. Males do not produce fruit. The grapes are often used to make a delicious jelly and are also popular with birds and squirrels.

Figure 1. Middle-aged Coccoloba uvifera: Seagrape

General Information

Scientific name: Coccoloba uvifera
Pronunciation: koe-koe-LOE-buh yoo-VIFF-er-uh
Common name(s): Seagrape
Family: Polygonaceae
USDA hardiness zones: 10A through 11 (Fig. 2)
Origin: native to North America
Invasive potential: little invasive potential
Uses: street without sidewalk; screen; specimen; shade; hedge; reclamation; fruit; tree lawn 3-4 feet wide; tree lawn 4-6 feet wide; tree lawn > 6 ft wide; urban tolerant; highway median; Bonsai
Availability: generally available in many areas within its hardiness range

Figure 2. Range

Description

Height: 25 to 30 feet
Spread: 20 to 30 feet
Crown uniformity: symmetrical
Crown shape: vase
Crown density: moderate
Growth rate: moderate
Texture: coarse

Foliage

Leaf arrangement: alternate (Fig. 3)
Leaf type: simple
Leaf margin: entire
Leaf shape: orbiculate
Leaf venation: reticulate, brachidodrome, pinnate
Leaf type and persistence: evergreen, broadleaf evergreen
Leaf blade length: 8 to 12 inches
Leaf color: green
Fall color: red
Fall characteristic: not showy

Flower

Flower color: white/cream/gray
Flower characteristics: not showy

Fruit

Fruit shape: round
Fruit length: .5 to 1 inch
Fruit covering: fleshy
Fruit color: purple, blue
Fruit characteristics: attracts birds; showy; fruit/leaves a litter problem

Trunk and Branches

Trunk/bark/branches: branches droop; showy; typically multi-trunked; thorns
Pruning requirement: needed for strong structure
Breakage: susceptible to breakage
Current year twig color: brown
Current year twig thickness: thick
Wood specific gravity: unknown

Culture

Light requirement: full sun, partial sun or partial shade
Soil tolerances: clay; sand; loam; alkaline; acidic; well-drained
Drought tolerance: high
Aerosol salt tolerance: high

Other

Roots: not a problem
Winter interest: no
Outstanding tree: no
Ozone sensitivity: unknown
Verticillium wilt susceptibility: unknown
Pest resistance: resistant to pests/diseases
Figure 3. Fruit

Use and Management

The contorted, twisting trunk (which can grow to two feet in diameter) and upright branching habit makes Seagrape an interesting, picturesque shade tree or specimen planting or, it can be pruned into a dense hedge, screen, or windbreak. Because of its size and coarse texture, Seagrape as a clipped hedge is more suited to foundation plantings for large buildings where it will lend a tropical effect. It is also used as a seaside hedge in commercial landscapes, but requires hand pruning, since the large leaves do not lend themselves well to shearing.

Pruning is required two or three times during the first 10 years after planting to train the multiple trunks so they are well-attached to the tree. Be sure branches do not develop embedded bark, since they will be poorly attached to the trunk and could split from the trunk. But the wood and the tree is generally very strong and durable following this developmental and corrective pruning. The tree will then perform well with little care, except for occasional pruning of lower branches to create clearance for vehicles. Some people object to the litter created by the large, slowly-decomposing leaves which fall from the tree during the year.

Requiring full sun and sandy, well-drained soils, Seagrape is excellent for seaside locations since it is highly salt- and drought-tolerant. Plants should be well-watered until established and then should only require occasional pruning to control shape.

There is a variegated cultivar available.

Propagation is by seed or cuttings.

Pests

Stems are subject to Seagrape borer which can kill branches.

A nipple gall causes raised, red nipples on the upper leaf surface.

Diseases

No diseases are of major concern.


Footnotes

1.This document is ENH334, one of a series of the Environmental Horticulture Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date November 1993. Revised December 2006. Visit the EDIS Web Site at http://edis.ifas.ufl.edu.

2. Edward F. Gilman, professor, Environmental Horticulture Department; Dennis G. Watson, 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 extension publications, contact your county Cooperative Extension service.

U.S. Department of Agriculture, Cooperative Extension Service, University of Florida, IFAS, Florida A. & M. University Cooperative Extension Program, and Boards of County Commissioners Cooperating. Larry Arrington, Dean.



Copyright Information

This document is copyrighted by the University of Florida, Institute of Food and Agricultural Sciences (UF/IFAS) for the people of the State of Florida. UF/IFAS retains all rights under all conventions, but permits free reproduction by all agents and offices of the Cooperative Extension Service and the people of the State of Florida. Permission is granted to others to use these materials in part or in full for educational purposes, provided that full credit is given to the UF/IFAS, citing the publication, its source, and date of publication.