The growth of Welsh Onion requires loose and fertile sandy soil with good drainage.
Allium dahliae likes sunny growing environment, and does not like half shade. The suitable temperature for its growth is between 15 ℃ and 25 ℃, and it prefers to be cool. Winter generally does not need to do a lot of cold prevention measures, the ground part of the spring onion will die in summer, you can dig out the underground bulbs and put them in a ventilated place for preservation.
The management of water and fertilizer should be done well, and watering should be combined with fertilization. In the growth period of the onion, it is necessary to loosen the soil and water in time. Generally, fertilizer is applied every 2 to 3 weeks. Some thin liquid fertilizer can be applied and water with fertilizer. When summer is hot and air is dry, air humidity can be increased by shading or spray. When it rains, it needs timely drainage to avoid stagnant water but rotten bulbs.
The propagation of Allium dahuricum is generally carried out by sowing, autumn sowing from September to October, and sprouting in the spring of the second year. However, the propagation of Allium dahuricum dahuricum needs to be cultivated for 5 years before flowering. The big Allium can also be propagated in different spheres. The main purpose is to remove the small bulbs around the main bulb of the big Allium and plant them in summer and autumn. Generally, they can bloom in the second year after planting.
The common disease of scallion is putrefaction, mainly bulb putrefaction. Most of the reasons for the outbreak of putrefaction are water accumulation, which leads to poor breath and putrefaction of bulbs.
In general, the bulbs of Welsh onion are prone to rot when the drainage is poor. Generally, they dry up in summer and frequently when the rainy season comes. The underground bulbs of Welsh onion can be dug out and stored in a ventilated place.
