The spruce tree can survive temperatures of up to minus 60 degrees Celsius in winter. It is ideally equipped for the cool season. But how does she protect herself against frost and keep her green dress? We answer these questions below.
How does the spruce protect itself from the cold in winter and stay green?
The spruce tree survives temperatures of up to minus 60 degrees Celsius in winter by producing its own biological antifreeze, sugar, and going into hibernation. Their narrow needles and thick epidermis retain their green color even in winter.
What happens to the spruce in winter?
Unlike deciduous trees, almost all conifers take the winter relatively calmly, it seems. In fact, the spruce has gradually adapted to the cold over the course of evolution. It doesn't freeze and keeps its needles.
How does the spruce protect itself against frost?
As researchers have discovered, there are at least 43 genes that are responsible for the frost protection of most conifers, such as spruce and pine. They produceown biological antifreeze: sugar. These in turn prevent ice crystals from forming and also protect sensitive proteins inside the cells; The latter can therefore continue to work as usual even in sub-zero temperatures.
Why does the spruce tree stay green in winter?
In contrast to deciduous trees, the spruce has very narrow “leaves”. Due to their smaller surface area, the spruce needles evaporate less water. In addition, theirouter layer of cells - called the epidermis - is significantly thicker than their other cells. The wax coating also helps the spruce stay green in winter.
Tip
The spruce as a Christmas tree
If you are looking for a cheap but no less beautiful alternative to the Nordmann fir when choosing a Christmas tree, we recommend spruce. It can be decorated just as easily as a fir tree and spreads a pleasantly woody scent. Important: The spruce needles sting, so you should always wear work gloves (€17.00 on Amazon) when touching the conifer.
