Can blueberries be exposed to sunlight in summer

blueberries are generally not recommended to be exposed to direct sunlight in summer, as excessive exposure may cause fruit burns and plant dehydration. Blueberries prefer cool and humid environments, and direct sunlight in summer can easily cause problems such as leaf burnout and fruit softening. Blueberries belong to shallow rooted plants and are sensitive to water and light. During the high temperature period in summer, there is strong sunlight, and continuous exposure can accelerate soil moisture evaporation, leading to insufficient water absorption by roots. Leaves may exhibit sun burning phenomena such as edge yellowing and curling under strong light. Immature fruit skins may become hard and wrinkled, while mature fruits are prone to dehydration and wrinkling. Potted blueberries need to pay more attention to shading, as the container's water storage capacity is limited, and a sharp increase in soil temperature after exposure to sunlight can damage the capillary roots.

In special circumstances, some sun tolerant varieties such as Beigaocong blueberries can tolerate short-term strong light under sufficient irrigation. If the planting area has weak ultraviolet rays in summer or a large temperature difference between morning and evening, receiving gentle morning light can help accumulate sugar in the fruit. But around noon, it is still necessary to use a sunshade net to filter out strong light, and it is ideal to maintain a shading rate of around 30%.

It is recommended to choose planting locations facing east or north for blueberry maintenance in summer, avoiding exposure to sunlight in the west. In hot weather, organic matter such as pine needles can be covered on the ground to maintain moisture, and watering should be done in the morning or evening every day to keep the soil moist. During the fruit development period, a single-layer sunshade net is used for protection, which can prevent sunburn without affecting ventilation. Sunburned leaves should be trimmed in a timely manner, and water-soluble fertilizers containing humic acid should be applied to help the plants recover. Potted plants can be moved to a semi cool place and cooled by spraying water on the leaves.