Overall, each part of the world has its own reasons for painting tree trunks white. However, most of them focus on protecting trees from the sun, weather, insects, or other pests. And even though there are other alternatives to prevent such problems, few are as effective and accessible as whitewashing.
Therefore, if you have any young trees in your garden, you should consider whitewashing them regularly. Not only will you fend off insects, but you will give your trees enough protection for them to fully grow without the fear of Sun Scald. And best of all, whitewashing will prevent fungi, so you don’t have to worry about your trees becoming infested by mold.