Jack Pine Fact Sheet
Family: Pinaceae - Pine family
Latin name: Pinus banksiana
Common name: Jack pine
- irregular, sparse habit creates a craggy, scrubby silhouette.
- Leaf Number/Attachment:
- Two-needles per fasicle pine forming a "V" shape.
- Each needle may have a slight twist.
- Needles are frequently a yellow-green or olive-green color
- Sparsely arranged at the tip of the twigs.
- Needles only persist for 2-4 years.
- Large numbers of cones are produced.
- It is common to find immature cones, mature unopened cones, and mature open cones on the tree all at the same time.
- This is unique to Jack pine and is a great identification tool.
- Jack pine cones point toward the tip of the branch and generally have a curve.
- Cones mature in second year.
- Some cones open upon maturity. Others remain on the tree for many years without opening.
- Fire or temperatures above 120 F will initiate opening and dispersal of the seeds.
Resource for Distinctive Features.
College of DuPage DigitalCommons
Landscape Plants of the Chicago Area
Karren Wcisel © copyright
Send email to Karrenw@aol.com
Please ask for permission before using my photographs. Larger sizes and additional photographs
of the tree are often available.
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