Key Points of Blueberry Winter Cold-Protection Techniques to Help Blueberries Survive the Winter Safely

Blueberry is a perennial small-fruit shrub. Its branches are relatively thin and weak, and its xylem is relatively thin, so under the effects of low winter temperatures and wind, it is highly prone to freeze damage and cane dieback. Therefore, cold protection for blueberries in winter is extremely important. So how should you protect them from the cold in winter so they can overwinter safely? Let's take a look.

1. Mounding soil for cold protection

In late autumn and early winter, bury the entire plant with moist fine soil. This ensures that the moisture in the branches and leaves will not be lost. If the plant is relatively tall, you can press the plant down with soil and then mound soil over it. However, in actual practice, to save time and effort, you can build an arc-shaped mound of soil about 40 cm on the windward side of the plant, artificially creating a sheltered, sunny environment. This can shorten the time the soil stays frozen and also help the roots absorb water.

2. Piling snow for cold protection

In northern regions, winters are colder and snowfall is heavier, so snow can be piled for cold protection at harvest. Blueberry plants protected by piled snow not only have higher yields than those given other cold-protection measures, but the method is also convenient and quick. Generally, covering about two-thirds of the plant's height is appropriate, with a suitable height of usually 20-30 cm. Plants treated by piling snow rarely show cane dieback, and yields increase substantially. However, this method is suitable for areas with heavy winter snowfall and accumulated snow.

3. Mulching for cold protection

Before the soil freezes, you can cover the plants with some mulch such as leaves, rice straw, or straw mats, which can provide some cold protection. In addition, combined with irrigation of freezing water, the effect is better in areas above minus 10 degrees. Using materials such as leaves, rice straw, and straw mats for protection is suitable for orchards that are 3 years old or older. You can also use double-layer cold-protection materials for protection. This saves labor during cold protection, and the materials can be reused for several years.

4. Plastic greenhouses or greenhouses

Using plastic greenhouses or greenhouse cultivation, this method has the best cold-protection effect and can also make blueberries ripen early and go on the market earlier, but the drawback is the relatively large upfront investment.

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