Where is Codonopsis suitable for planting

Where Codonopsis is grown

Codonopsis pilosula is suitable for planting and growing in warm and cool semi-humid and semi-arid climate areas with an annual normal precipitation of 350-650 mm. The breeding temperature should not be too high or too humid, otherwise it will affect its growth and development.

Codonopsis pilosula is mostly produced in southeastern Tibet, western Sichuan, northwestern Yunnan, eastern and southern Gansu, southern Shaanxi, Guizhou, Ningxia, eastern Qinghai, Henan, Shandong, Shanxi, Hebei, Inner Mongolia and Northeast China. Among them, the Codonopsis pilosula produced in Pingshun County, Shanxi Province is the most famous and is a Chinese agricultural product protected by geographical indication.

Codonopsis planting conditions

When the temperature is between 3℃ and 7℃, Codonopsis begins to sprout, and when the temperature is between 10℃ and 8℃, the plant emerges. When the daily average temperature is between 18℃ and 20℃, the plant grows fastest. The most suitable vernalization temperature is between 0℃ and 5℃. Generally, it can grow normally between 8℃ and 30℃.

Codonopsis pilosula has strong cold resistance. Its roots overwinter in the soil and will not be frozen to death even in severe cold conditions of around minus 25℃, and can still maintain vitality.

Key points of planting and management of Codonopsis pilosula

1. Thinning and replanting:

For direct seeding, thin out the seedlings when they are 5-7 cm tall in spring, leaving one seedling every 3-5 cm. If there are missing or dead seedlings, they must be replanted in time. To replant, insert a small bamboo stick into the soil, poke a small hole, put the seedling in, and cover with soil and press it tightly.

2. Intertillage and weeding:

Both direct seeding and transplanting should be combined with thinning and replanting to weed, because small seedlings cannot be cultivated. After the seedlings wither in autumn, use a small hoe to hoe shallowly between the rows and cultivate the soil at the same time. Weeding should be done in the spring and autumn of the second and third years after sowing.

3. Topdressing:

After weeding in spring, apply human and animal manure and appropriate amount of urea per mu to promote seedling growth. In autumn, apply 50 kg of ammonium phosphate or compound fertilizer per mu, and combine it with tillage and soil cultivation to turn the fertilizer into the soil.

4. Establish pillars:

When the seedlings are about 30 cm tall, use bamboo or small tree branches as supports and insert them between the rows, slightly staggered with each other, so that the Codonopsis pilosula vines can be wrapped around them.