Black pearl blueberry, commonly known as northern high bush blueberry, is different from ordinary blueberry. Ordinary blueberries are found locally in China, and the high-bush blueberries in the north are cultivated from the southern United States.

2. Different growth habits.

Black pearl blueberry likes cold climate and has strong cold resistance. Some varieties can tolerate the low temperature of -30 ~-35℃, and the dormancy period needs a long time of low temperature. Generally, the low temperature requirement of < 7.2℃ is about 800- 1200 hours. In southern China, blueberries have two growth peaks in a year, the first is from May to June, and the second is from mid-July to mid-August.

Extended data:

Pest control:

There is no disease or serious disease in the new blueberry planting area, and the pests mainly include poisonous moths, thorn moths and other pests adjacent to the orchard, such as peach borer and longicorn beetle. Therefore, small isolated gardens can be used in southern mountainous areas to reduce the degree of harm.

For a small number of branch pests, such as longicorn beetles and fruit eaters, cotton wool is used to artificially block the drilling holes and kill the larvae. For leaf pests such as poisonous moths, spiny moths and silkworm moths, light is used to trap and kill adults at night; Trapping and killing Drosophila and beetle adults with sweet and sour liquid; The focus of prevention and control time is from mid-April to mid-August, focusing on prevention and combining prevention and control. Pay attention to prevent birds from pecking when planting in forest areas.

Baidu encyclopedia-blueberry

Baidu Encyclopedia-North High Cong Blueberries