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Publication #ENH-617

Pinus clausa: Sand Pine1

Edward F. Gilman and Dennis G. Watson2

Introduction

This native North American pine is usually seen as a scrubby tree, capable of reaching 100 feet in height but more often seen 15 to 40 feet tall, with a slow growth rate. The supple, evergreen leaves and the plant's ability to thrive in almost any soil make Sand Pine a good choice for use as a Christmas tree, with proper shearing. The 2 to 3.5-inch-long, spiny cones persist for quite a while on the tree, often becoming embedded in the wood of the twigs.

Figure 1. 

Mature Pinus clausa: Sand Pine


Credit:

Ed Gilman


[Click thumbnail to enlarge.]

General Information

Scientific name: Pinus clausa
Pronunciation: PIE-nus KLAW-suh
Common name(s): Sand Pine
Family: Pinaceae
USDA hardiness zones: 7A through 10B (Fig. 2)
Origin: native to North America
Invasive potential: weedy native
Uses: specimen; shade; reclamation; highway median; Christmas tree
Availability: somewhat available, may have to go out of the region to find the tree

Figure 2. 

Range


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Description

Height: 25 to 40 feet
Spread: 15 to 25 feet
Crown uniformity: irregular
Crown shape: oval
Crown density: open
Growth rate: slow
Texture: fine

Foliage

Leaf arrangement: alternate (Fig. 3)
Leaf type: simple
Leaf margin: entire
Leaf shape: needle-like (filiform)
Leaf venation: parallel
Leaf type and persistence: fragrant, evergreen, needled evergreen
Leaf blade length: 2 to 4 inches
Leaf color: green
Fall color: no color change
Fall characteristic: not showy

Flower

Flower color: yellow
Flower characteristics: not showy

Figure 3. 

Flower


[Click thumbnail to enlarge.]

Fruit

Fruit shape: oval, cone
Fruit length: 1 to 3 inches
Fruit covering: dry or hard
Fruit color: brown
Fruit characteristics: attracts squirrels/mammals; not showy; fruit/leaves a litter problem

Figure 4. 

Fruit


[Click thumbnail to enlarge.]

Trunk and Branches

Trunk/bark/branches: branches droop; not showy; typically one trunk; thorns
Pruning requirement: little required
Breakage: susceptible to breakage
Current year twig color: brown
Current year twig thickness: medium
Wood specific gravity: 0.48

Culture

Light requirement: full sun, partial sun or partial shade
Soil tolerances: clay; sand; loam; slightly 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: resistant
Pest resistance: resistant to pests/diseases

Use and Management

The trunks on Sand Pine are rarely straight. The tree usually grows with a portion of the crown missing or with a lean to one side. This may contribute to the unpopularity of the tree in the landscape trade. However, this attribute can make it well suited for planting as an accent in any large scale landscape. It is especially useful and attractive when planted in a lawn area as a single specimen. It certainly has its place in reclamation sites as a colonizer of poor soils. The tolerance to dry, sandy soils should make this tree adaptable to conditions created near asphalt and other hot areas in urban landscapes.

Sand Pine should be grown in full sun on any well-drained soil. The tree is highly drought- and salt-tolerant.

Propagation is by seed.

Pests and Diseases

No pests or diseases are of major concern.

Footnotes

1.

This document is ENH-617, one of a series of the Environmental Horticulture, UF/IFAS Extension. Original publication date November 1993. Revised December 2006. Reviewed February 2014. 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, UF/IFAS Extension, 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.