Juniperus scopulorum vs. virginiana

Discussion in 'Gymnosperms (incl. Conifers)' started by coelacanth, Dec 3, 2012.

  1. coelacanth

    coelacanth Active Member

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    How can I distinguish the two (in an urban setting)?
     
    Last edited by a moderator: Dec 3, 2012
  2. Michael F

    Michael F Paragon of Plants Forums Moderator 10 Years

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    With difficulty! J. scopulorum tends to have bluer-toned foliage and J. virginiana greener-toned, but they overlap. The cones ("berries") if present are a better help, larger (6-9 mm) in J. scopulorum and smaller (4-6 mm) in J. virginiana; they also differ in maturation, with J. scopulorum cones maturing in 18-20 months from pollination (early spring to autumn a year later), and J. virginiana in 6-8 months (early spring to autumn the same year).
     
  3. Ron B

    Ron B Paragon of Plants 10 Years

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    Here the dry-climate J. scopulorum tends to become ratty in cultivation whereas J. virginiana tends to maintain an attractive appearance.
     
  4. SusanDunlap

    SusanDunlap Active Member

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    there may be a difference in size: J. virginiana will get taller (65 x 14) and wider than J. virginiana (49 x various widths depending on cv.).

    Does someone know about the bark?
     
  5. Ron B

    Ron B Paragon of Plants 10 Years

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  6. Michael F

    Michael F Paragon of Plants Forums Moderator 10 Years

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    Got a name doubled there by mistake ;-)

    J. virginiana is the taller, reported to 30m, and J. scopulorum the smaller, to 20m. But those figures are for mature specimens in their native habitats; it won't help much with cultivated plants.
     
  7. SusanDunlap

    SusanDunlap Active Member

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    thanks for finding and correcting my error
     
  8. coelacanth

    coelacanth Active Member

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    Beauteous, thank you all kindly.
     

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