Japanese black pine USDA PLANTS Symbol: PITH2
U.S. Nativity: Exotic
Habit: Conifer Trees
Pinus thunbergii Parl.

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Taxonomic Rank: Pinopsida: Pinales: Pinaceae
Native Range: Japan (REHD);

Pinus thunbergii is a small evergreen tree that can reach heights of about 20-30 ft (6-9 m) tall and about 20-35 ft (6-11 m) wide in cultivation. In its native habitat it can grow to over 100 ft (30.5 m) tall. The branches are usually large and contorted, spreading horizontally or hanging down. It is native to northeastern China, Korea and Japan.
The leaves are usually a dark green. The needles are 5-7 in long and twisted. Needles are borne in groups of two per bundle.
Seed cones are either solitary or held 2-3 together. They are about 1.6-2.4 x 1.2-1.6 in (4-6 × 3-4 cm) long by wide and deciduous. The seeds are obovoid to ellipsoid in shape.
Ecological Threat
P. thunbergii prefers full sun and can tolerate a wide range of soil types. It is tolerant to both drought and high salinity. The climate of the southern half of the United States is suitable for this tree.

Selected Images from Invasive.orgView All Images at Invasive.org

Deena Sharon Chadi, , Bugwood.org
Additional Resolutions & Image Usage

EDDMapS Distribution:
This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org

State(s) Where Reported invasive.
Based on state level agency and organization lists of invasive plants from WeedUS database.

U.S. National Parks where reported invasive:
Colonial National Historical Park (Virginia)

Invasive Listing Sources:
Delaware Natural Resources and Environmental Control, 2004
Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
Mid-Atlantic Exotic Pest Plant Council, 2005
Pennypack Ecological Restoration Trust, Pennsylvania.