The vegetable planting method and time are as follows:

1. Planting method: Plot preparation: Choose soil rich in organic matter and well-drained, and apply sufficient base fertilizer in advance, such as compost and manure. or compound fertilizer. Seed treatment: Celery seeds are larger and may not require special germination treatment like ordinary celery before sowing. However, in order to increase the emergence rate, the seeds can be soaked for a period of time in advance to promote water absorption.

Sowing: Sow the seeds into the prepared soil at an appropriate depth (about 1 to 2 cm), and keep the soil moisture moderate. Seedling management: After emergence, keep the soil moist, time the seedlings at the right time, and retain strong seedlings. Celery has a long growth cycle and requires enough space. The spacing between plants is usually about 30 to 40 centimeters. Water and fertilizer management: Regular watering and top dressing should be done during the growth period, especially during the formation of rhizomes, to increase the supply of phosphorus and potassium fertilizers, which will help the development of rhizomes.

Pest and disease control: Pay close attention to the occurrence of pests and diseases, take preventive and control measures, keep the fields clean, and use pesticides when necessary. Harvesting: Celery has a long growth period and generally takes 4 to 5 months to reach harvesting standards. When the root diameter reaches 4-5 cm and the leaves on the ground begin to turn yellow, it can be harvested.

2. Planting time: Spring planting: In temperate areas, celeriac is usually sown in late spring to avoid slow growth or frost damage caused by low temperatures in early spring. The specific time is from mid-to-late April to early May, depending on the local climate. Autumn planting: suitable for planting in autumn. People who like a mild and cool growing environment can sow in late summer and early autumn, from the end of July to the beginning of August. This will allow the rhizomes to fully develop in autumn and winter. They can overwinter directly in warm winter areas, and in cold areas. Make sure the rhizomes are mature enough before the onset of severe cold.

Solemn statement: The above information represents my personal position and is for reference only.