**White pine

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**Pinus strobus
WHITE PINE

Pinaceae
E. North America

Location: map coordinates O-12 (northeast corner of Baker Building), N 39°11'10'' W 75°32'43'';
and R-18 (south of Thomasson Building), N 39°11'7'' W 75°32'38''

Planting history: O-12: probably planted by Dr. N. Dill, 1960’s-1970’s.
R-18: planting history presently unknown.

Description:
  • large evergreen tree, conifer
  • etymology: Pinus = the Latin name; strobus = Latin name of a gum-producing tree
  • needles in 5’s; the only 5-needled pine in the eastern U.S.
  • cones 4”-8” long
  • branches large, in whorls
  • tall tree, straight trunk; largest of eastern conifers, ca 80’-100’ tall. Reported to formerly reach 200’ tall, but large trees extensively lumbered; in colonial times, large trees were marked with “R” (“Royal”), reserved for King of England’s ship masts
  • inner bark formerly eaten as candy
  • susceptible to white pine blister rust; mortality of white pine much reduced by removal of alternate hosts currant and gooseberry
  • habitat uplands

**Adventive species (not native to Delaware, but native to N. America and now growing wild in Delaware); escaping occasionally into woods
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    There are 2 labeled white pine trees.
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