Conifers are little wonders
Why do coniferous trees not lose their needles? And how do they survive the winter when the water freezes and cannot be absorbed by the roots? Here are the answers.
Do you know why in the well-known Christmas carol «O Christmas Tree» it is said: «our branches green delight us»? Well, conifers have been around for more than 200 million years, a time when it was extremely hot all over the world. The ancestors of our conifers only survived because they are so-called xerophytes, plants adapted to drought.
In fact, needles are tightly rolled leaves. And like them, they are responsible for photosynthesis and therefore for the «transformation of nutrients» for the tree. During this process, in addition to the oxygen released, a large amount of aqueous vapor escapes from the stomata of the leaves (or needles). As the surface area of the needles is much smaller than that of the leaves, transpiration is reduced. On their underside, the needles also have special «stoma cells» which are buried in a small cave and slow down the evaporation of water even more.
Not to forget that the needles have a firm epidermis, often with a layer of wax as well. When water freezes in winter and cannot be absorbed by the roots, this layer prevents the trees from drying out and the needles from falling off. So, the fir tree is a little wonder even without decoration!
More inspirations for Advent & Christmas
Family and friends, that's what counts – Merry Christmas! Probably we have all changed in the last months. Less «me», more «we». This will also be felt in the coming weeks. Advent and Christmas 2021 - the most romantic trends Fancy a contemplative, glittering, magical Christmas time? Here you will find the newest trends: from traditional and natural to trendy and glamorous. In search of Xmas? Get inspiration LIVE in your region If trends are not enough for you, because you prefer to get inspiration live, then you should not miss the many Advent exhibitions of the flower stores. Advent with witches, gnomes, elves and kobolds Abracadabra! There are countries where beings endowed with magical powers do crazy things during Advent or are helpful and even bring gifts. Ding-a-ling vs. Ho-Ho-Ho - Best-of the heavenly gift-bringers Who brings the presents at Christmas? Swiss children do not agree at all, and this question is also hotly debated worldwide. Mistletoe? I saw Mommy kissing Santa Claus Already kissed under the mistletoe? There used to be rules for that. But mistletoe was also full of symbolism, even in the days of the druids and ancient Romans. Conifers are little wonders Why do coniferous trees not lose their needles? And how do they survive the winter when the water freezes and cannot be absorbed by the roots? Here are the answers.