Frost: A deposit of ice crystals formed on surfaces that are below freezing.
In gardening, frost is a primary concern as it can damage or kill tender plants. It occurs when the air temperature drops below freezing (32°F or 0°C), causing water vapor to freeze and forming ice crystals on surfaces like leaves, stems, and flowers. Different plants have varying degrees of frost tolerance.
For home gardeners, understanding frost is critical for planning. Knowing your area’s average first and last frost dates helps determine when it’s safe to plant certain crops. Protecting plants from frost might involve covering them with blankets or bringing them indoors. Frost-hardy plants can withstand freezing temperatures, while tender plants will likely be damaged or killed.
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