How many meters tall are Shandong green onions?

The highest green onion in Shandong is 2.532 meters.

The length of the onion is 2.532 meters, winning a new Guinness World Record title! On November 15, 2020, at the opening ceremony of the China Zhangqiu Green Onion Cultural Tourism Festival, the 2.532-meter green onion grown by Wangjin Village, Xiuhui Street, Zhangqiu District, Jinan City, Shandong Province broke the Guinness World Record. Zhangqiu green onions have a 2,700-year planting history. They are famous throughout the country for their high, large, crisp, white and sweet taste. They were named the King of Onions by Emperor Shizong of the Ming Dynasty.

In recent years, Zhangqiu green onions have won many honors such as China’s Famous Brand of Agricultural Products, China’s Well-known Trademarks, and China’s Top 100 Regional Public Brands of Agricultural Products, becoming an important symbol of Zhangqiu’s agricultural civilization. The annual China Zhangqiu Green Onion Cultural Tourism Festival has been held for 18 consecutive years. Every year, people from all over the country witness the birth of the number one champion in green onion planting.

Precautions for growing green onions

Choose soil that is well-drained and rich in organic matter, and ensure a suitable pH value (6.0 to 7.5). Choose a suitable planting time, usually early spring or autumn, to avoid high temperature seasons. Choose healthy and undamaged onion tubers as planting material. You can sow green onion seeds directly or use tubers for colonization, maintaining proper spacing between plants. Maintain moderate moisture levels and avoid overwatering and waterlogging. Fertilize regularly, adjusting amount and frequency based on soil tests and plant growth.

Inspect regularly and take preventive measures, such as using organic pesticides or other methods. Carry out stem management, including removing side buds and pruning off stem tops. When the green onion leaves turn yellow and fall over, they are mature and can be harvested. Carry out reasonable crop rotation and rotation to avoid accumulation of pests and diseases and depletion of soil nutrients.