Detailed Explanation of Saposhnikovia divaricata Planting Methods and Technical Points

Saposhnikovia divaricata should be planted in fertile, loose sandy loam soil. It prefers warm weather and is afraid of waterlogging, so drainage must be done well. During germination, water more frequently. After seedlings emerge, weed and fertilize on schedule. From June to August, apply topdressing twice with human and livestock manure and urine, and superphosphate. It is also necessary to prevent and control diseases such as powdery mildew, root rot, and leaf spot blight, as well as pests such as the yellow swallowtail butterfly, the yellow-winged fennel borer, and the carrot aphid.

1. Site selection: When planting Saposhnikovia divaricata, choose a plot with higher terrain and sunny exposure, and low-lying, damp places should be avoided. It is best to plant in sandy loam soil with deep soil layers, loose and fertile texture, and good drainage.

2. Propagation: The sowing time for Saposhnikovia divaricata is generally in spring or autumn. Spring sowing is generally in March to April, while autumn sowing is in September to October. Before sowing, the seeds must first be treated by soaking them in warm water for 24 hours so they fully absorb water before sowing.

3. Thinning and spacing: When the seedlings grow to 4-5 cm, thin them promptly, keeping the plant spacing at 5-7 cm; when the seedlings grow to more than 10 cm, finalize the spacing promptly, keeping the plant spacing at about 15 cm.

4. Weeding: After the spacing is finalized, Saposhnikovia divaricata should be cultivated and weeded 2-3 times each year to keep the field clean and prevent weeds from affecting plant growth.

5. Fertilization: June to August is the peak growing season for Saposhnikovia divaricata, so topdressing should be applied twice. Each topdressing can use human and livestock manure and urine, and superphosphate, applied in furrows between the rows.

6. Pest and disease control: During cultivation, Saposhnikovia divaricata suffers from several common pests and diseases, namely powdery mildew, the yellow-winged fennel borer, the yellow swallowtail butterfly, and the carrot aphid. During planting, control measures should be carried out according to the actual situation.

Planting Saposhnikovia divaricata is relatively simple. It can generally be harvested in the second year, usually in November, when the root tubers have grown to 30 to 50 cm.