Latest Technical Methods and Tutorial for Winter Cold Protection of Walnut Trees

Walnuts are very suitable for planting in the north, but because walnuts have a high water content and relatively poor cold resistance, most walnut trees face the difficulty of surviving the winter. Young walnut trees affected by freezing damage may, at best, have their yield affected the following year, and at worst, the entire plant may die. So how should walnuts be protected from the cold in winter? Let's take a look together.

1. Whitewashing the trunk

Friends living in the north must be familiar with whitewashing tree trunks. Whether it is your own fruit trees or ornamental trees along the roadside, they all need to be whitewashed before winter arrives, as this provides excellent cold protection. Similarly, whitewashing also has a certain effect on protecting young walnut trees from the cold through the winter. For whitewashing, generally choose 0.5 kg of salt, 6 kg of quicklime, and 15 kg of clean water, then add an appropriate amount of adhesive and insecticidal and sterilizing agents, stir evenly, and apply it to the trunk and branches.

2. Applying plant antifreeze

Plant antifreeze can significantly improve a plant's frost resistance, prevent frost damage to the plant, and may even restore frost-damaged parts of the plant to normal. The main component of antifreeze is polyvinyl alcohol. First, heat water to 50 degrees, then add polyvinyl alcohol at one-twentieth of the amount, stirring while adding, until it all boils, then simmer on low heat for 20 minutes. After it cools naturally, finally add insecticidal and fungicidal agents as well as an adhesive, and it is ready to use.

3. Irrigating with freezing water

Freezing water is generally irrigated after the plant drops its leaves and before the soil freezes, so that when the soil freezes, a frozen soil layer forms near the roots, keeping the root temperature relatively stable and preventing the plant from freezing.

4. Mounding soil for frost protection

Young walnut trees have relatively poor cold resistance, so after irrigating with freezing water, soil can be mounded around the root collar, with both diameter and height best kept between 30 cm and 50 cm. This not only reduces water loss, but also prevents low-temperature freezing damage to the root collar of young trees. At the same time, an appropriate amount of insecticide can be added to prevent overwintering pests from reproducing.

  The above is an introduction to winter cold protection techniques for walnut trees. We hope it can help you. To learn more related knowledge, please stay tuned to us.