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949

leaves in snow
The mustard plants in my garden are still green, in spite of sub zero temperatures and snow. How do they survive when most of the other plants have not?

Answer:

Some plants avoid freeze damage by concentrating sugars and other soluble chemicals in their cells. It is not enough sugar to give the plant a sweet taste, but it acts like like the anti-freeze in your car, keeping the cell from suffering freeze damage.
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