Snow accumulation around fruit trees offers several important benefits for their health and growth. First, piling snow in the tree's root zone helps protect the roots from freezing damage, acting as a natural insulating layer during cold winter months.
Second, snowmelt contains higher levels of nitrogen compared to rainwater—approximately four times more by volume. This nutrient-rich meltwater provides essential nutrients that support the growth and development of fruit trees.
Third, snow acts as a slow-release source of moisture. As it melts, it increases soil moisture content, improving the tree's ability to withstand drought and meeting its water needs during the spring growing season.
Fourth, the melting snow under the trees creates a favorable environment for root activity, promoting overall tree growth and vitality.
Fifth, snow helps prevent a condition known as "winter draw," where trees suffer from dehydration due to low soil moisture, even in cold temperatures. By increasing soil moisture after melting, snow reduces the risk of this issue and helps keep young trees alive through the winter.
Sixth, snow can also serve as a natural pest control method. As it melts, it absorbs heat from the surrounding environment, which can lower soil temperature and help kill overwintering pests that might otherwise damage the trees.
For maximum benefit, the snow should be at least 30 cm thick and cover an area equal to or larger than the tree’s canopy. If snowfall is limited, it's advisable to collect snow from other areas of the orchard or nearby regions and pile it under the trees. Compacting the snow ensures better coverage and enhances its insulating and moisture-retaining effects. This practice not only protects the trees but also contributes to long-term orchard health.
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