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Plants that are most susceptible to frost damage include tender annuals such as tomatoes, peppers, and basil. Delicate perennials, young seedlings, and tropical plants like hibiscus and citrus ...
Non-acclimatized individuals can survive −5 °C, while an acclimatized individual in the same species can survive −30 °C. Plants that originated in the tropics, like tomato or maize, don't go through cold hardening and are unable to survive freezing temperatures. [3]
The ability to control intercellular ice formation during freezing is critical to the survival of freeze-tolerant plants. [3] If intracellular ice forms, it could be lethal to the plant when adhesion between cellular membranes and walls occur. The process of freezing tolerance through cold acclimation is a two-stage mechanism: [4]
The loss of frost resistance occurs after warming. Rapid temperature fluctuations during winter deharden trees and increase the risk of spring damage. [5] Species that bloom first even before the leaves develop like apricots or peaches, are particularly vulnerable to damage. The reproductive organs, due to their abundant hydration, are easily ...
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Also among plants that survive winter outside are snowdrops (Galanthus nivalis). These early bloomers appear in early spring and sometimes even late winter, adding color to your winter garden.
Tender plants are those killed by freezing temperatures, while hardy plants survive freezing—at least down to certain temperatures, depending on the plant. "Half-hardy" is a term used sometimes in horticulture to describe bedding plants which are sown in heat in winter or early spring, and planted outside after all danger of frost has passed.
An early light frost can wipe out your garden harvest for the season. When a light frost is expected, water your garden to wet the plants. When water freezes it produces heat.