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Christmas Tree Science

Christmas Tree Science

Top of Mind with Julie Rose - Season 1, Episode 1491 , Segment 3

Civilian DoD, Christmas Songs, Homemade Roller Coaster

Episode: Civilian DoD, Christmas Songs, Homemade Roller Coaster

  • Dec 15, 2020 9:00 pm
  • 16:01

In the quest to grow the perfect Christmas tree, pinecones are a big problem. Guest: Bert Cregg is a professor of tree physiology and horticulture at the University of Michigan.

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