Also called grey pine and scrub pine (although do not confuse with scrub pine  Pinus virginiana ).  Part of 🌲︎ pine  genus Pinus in 🌲︎ cedar / fir / hemlock / larch / pine / spruce  family Pinaceae.

Native to 🇨🇦 Canada, and northernmost 🇺🇸 USA.

Uses by native peoples
(Ethnobotany database)

Pinus hosts caterpillars of 247 species
of butterflies and moths, in some areas.

Jack pine requires 🔥︎ fire to 🌱︎ germinate, to melt the sap in their very-tough seratonous (resin-filled) cones, releasing the seeds.  Thus, jack pine forests are often composed of trees all the same age, all 🌱︎🌱︎🌱︎ germinated together after a fire moved through (and perhaps killed their parents).  Jack pine often grows with aspen/cottonwood/poplar  genus Populus —after a fire, both grow fast and eventually would get shaded out by spruce  genus Picea and fir  genus Abies, until again invigorated by the next cycle of fire.

And these young fire-invigorated jack pine are essential for nesting of the endangered 🐦︎ Kirtland's warbler  Setophaga kirtlandii. [1]

References

[1]  Rubin, Neal.  "Endangered no more, could Kirtland's warbler replace robin as state bird?"  The Detroit News.  2019-07-12.   Accessed 2019-08-02.

Learn more about jack pine Pinus banksiana

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