The latest planting time of blueberry seedlings

Blueberry, also known as blueberry, Benedictine, persimmon, and so on, is a small berry tree of perennial shrubs of the azaleaceae family. It is called blueberry because the fruit is blue, and the fruit is rich in nutrients. It has the functions of preventing brain nerve aging, protecting eyesight, strengthening heart, anti-cancer, softening blood vessels, enhancing human immunity and so on. Let's take a look at the planting time of blueberry seedlings.

Planting time of blueberry seedlings

The best time to plant blueberries is from autumn to the following spring before sprouting, because the seedlings in this period are easy to transport, manage and plant. Northern areas are generally planted in spring, autumn planting in winter is easy to suffer frost damage, spring planting is usually from March to April, generally choose 2-3-year-old seedlings, one is cheap, the other is strong adaptability, it is easy to grow.

Planting environment of blueberry seedlings

Blueberries are basically distributed around the world, mainly in areas with cool and sunny climates, such as Korea, Japan, Mongolia, Russia, Europe, North America and the Chinese mainland in Heilongjiang, Inner Mongolia and Changbai Mountain in Jilin Province. growing at 900m to 2300 m above sea level, blueberries are found in coniferous forests, peat bogs, mountain tundra and pastures, and are also an important part of heather shrubs. The quality of blueberries in North America is well-known all over the world. Semi-alpine blueberries are suitable for growing in temperate cold zones, northern high-clump blueberries and some semi-high-clump blueberries are suitable for warm temperate zones, and rabbit-eyed blueberries and southern high-clump blueberries are suitable for growing in subtropics. There are many wild variety resources of blueberries such as Benedictine blueberries and blueberries in Changbai Mountain and Daxing'an Mountains in Northeast China.

Blueberry seedling varieties

1. Dwarf blueberries: dwarf blueberries are small, 30cm to 50cm high. Cold resistance can be cultivated in the low temperature area of-40 ℃, and the cultivation and management techniques are simple. It is very suitable for commercial cultivation in the northeast alpine mountain area, and the yield per mu is about 500kg.

① Meiden: medium mature species (matured in mid-July in Changbai Mountain). The fruit is round, light blue, with many fruit powder, fragrance and good flavor. The tree is strong and high yield. the average yield of 5-year-old plant in Changbai Mountain is 0.83 kg, the highest is 1.59 kg. The cold resistance is extremely strong, and Changbai Mountain can survive the winter safely in the open field, which is the first variety for the development of blueberries in alpine mountain areas.

② Fendi: Fenti is a Canadian variety, medium ripe, fruit size is slightly larger than Maiden, light blue, covered fruit powder, high yield, premature birth.

2. Semi-high clump blueberries: semi-high clump blueberries are obtained from the cross between tall bushes and dwarf bushes. They have large fruit, good quality, relatively short tree body, strong cold resistance, generally resistant to-35 ℃ low temperature, suitable for cultivation in cold areas of the north, and the tree is 50 cm high and 100 cm high.

① Beilu: early ~ middle mature species, strong tree potential, erect type, tree height of about 1.2m, is the taller variety of half-height blueberry species. The fruit is medium-grained, with many powders, compact pulp, juicy, good fruit taste, medium sweetness and BX12.0%, acidity. The pedicel scar is medium-sized, dry, regardless of soil, extremely productive and hardy.

② North Blue: late-maturing species, strong tree, tree height of about 60 cm, dark green leaves, glossy is one of its major characteristics. The fruit has large grains, dark blue pericarp, good flavor, storage resistance and cold resistance (- 30 ℃). High yield, the harvest is 1.3 ~ 3.0 kg / plant, the harvest will increase in warmer areas, and it is easy to be infected with root rot in the case of poor drainage. There is no need for special pruning except for timely pruning of dead branches.

③ North Village: early-medium mature species, about a week earlier than Beilan or Beikong, with medium tree potential, 45cm in height and 100cm in crown width. The tree potential varies according to soil conditions. It has strong cold tolerance and can withstand the low temperature of-37 ℃. The fruit has medium grain, good flavor, good storage resistance, bright blue pericarp, soft and sweet fruit and good flavor. The fruit yield is high, the harvest is 1.0-2.5 kg / plant, it is cold-resistant and can be overwintered in open field in alpine mountain area.

3. South Gaocong blueberries: South Gaocong blueberries like humid and warm climate conditions, which is suitable for the development of areas south of the Yellow River in China, such as Central and South China.

① Sharp Blue: medium mature species, medium-strong, open type. Fruit medium-large, sweet BX15.0%, acidity pH4.00, fragrant, more fruit juice, suitable for making fresh fruit juice. The pedicel marks are small and wet, and the low temperature requires 150 to 300 hours. The soil has strong adaptability and high yield, but it is not suitable for transportation.

② O'Neill: precocious species, strong trees, open type. The fruit has large grains, sweetness BX13.5%, acidity pH4.53 and strong aroma, which is the most fragrant among the southern high-clump blueberry varieties. The pulp is hard, pedicel marks are small, fast drying, low temperature requires time 400 to 500 hours, heat-resistant varieties, high yield.

③ haze: medium mature species, medium tree potential, open type. Medium-large, sweet BX14.0%, acidity pH4.20, fragrant. The pedicel mark is small and dry, and the time required for low temperature is 20000hrs. The southern alpine blueberry variety is the most productive one, which belongs to the warm zone evergreen variety.

4. North Gaocong blueberry: North Gaocong blueberry likes cold climate and has strong cold resistance. Some varieties can resist the low temperature of-30 ℃, which is suitable for the development of humid coastal areas and cold areas in northern China.

① Convier: the representative of late-maturing species, with strong adaptability to soil, strong tree potential and large plants. The young trees stand upright and the branches droop and open gradually after they bear fruit. The fruit has large grains, strong sour taste of BX10.5%, bright blue pericarp, more fruit powder, medium pedicle scar size and humidity. The fruit is easy to preserve, the fruit is less cracked, and the fruit has a long ripening period.

② Darrou: late mature species. The tree is moderate and upright. The fruit is large-super-large, sweet BX14.0%, acidity pH3.45, strong aroma. The sour taste of fruit tends to increase with the increase of altitude. The pericarp is bright blue and the pedicel marks are medium in size and humidity. The fruit is less dehiscent and the storage is poor.

③ Lanfeng: medium-ripe variety, the main variety in Michigan, USA. The tree has strong growth, open crown, soft branches and strong cold resistance when young trees, and its drought resistance is the strongest among the blueberries in the north high clump. High yield, and continuous high yield ability. The fruit is large, light blue, thick powder, hard flesh, dry pedicel, light fragrance, slightly sour when not fully ripe, good flavor, sweetness is BX14.0%, acidity is pH3.29, is a good variety of fresh fruit sales.

5. Rabbit eye blueberry: rabbit eye blueberry tree is tall, long-lived, resistant to damp and heat, lax on soil conditions, and drought-resistant. However, the cold resistance is poor, and many varieties can be frozen at a low temperature of-27 ℃. It is suitable for cultivation in hilly areas in the south of the Yangtze River Basin and South China.

① Baldvin: late-maturing species, strong tree, open type, medium-large fruit, high sweetness, medium acidity. The pericarp is dark blue and the fruit powder is few. The fruit is hard and has a good flavor. The pedicel scar of the fruit is dry and small. It has a long harvest time and is suitable for cultivation in courtyards and sightseeing gardens.

② Garden Blue: middle to late maturity species, strong tree, erect, 2.60m high, 1.40m crown width. The fruit is rich in sweetness, less sour and fragrant. The fruit powder is few, the peel is hard. Places with poor soil conditions can also grow vigorously, so it is suitable for cultivation in parks, walls and other places.

③ pink blue: late-maturing species, strong tree, erect type, medium-sized fruit, slightly smaller than tiff blue, extremely hard flesh. Sweetness BX15.2%, acidity pH3.40, fragrant. The pericarp is bright blue and has many fruit fans. Pedicel scars small and dry. Less fruit dehiscence, good storability and high yield.