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25-04-2017
Biology

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Why is maple sap collected in the spring instead of the fall?

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ThomasTheTank ThomasTheTank

25-04-2017

Sap flows when daytime temperatures rise above freezing (32 degrees Fahrenheit / 0 Celsius) and nighttime temperatures fall below freezing.
The rising temperature creates pressure in the tree generating the sap flow.

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