The leaves of the soil ginseng are the leaves of the plant Lulan in the Amaranthaceae family. It grows in fields, roadsides, corners of walls, slopes, and other damp places. It is harvested in summer and autumn, washed, and used fresh or dried. So, what are the growth habits and disease and pest control of soil ginseng?
【Growth Habits】
It prefers warm and humid climates, tolerating high temperatures and humidity but not cold temperatures. The optimal temperature for seed germination is 20-25°C, while the optimal temperature for plant growth is 25-30°C. It can tolerate temperatures above 36°C but grows slowly at 15°C, and its aboveground parts die when exposed to frost. The perennial can withstand temperatures as low as 0°C or short-term -5°C, and it prefers light but can tolerate shade. The stem and leaf growth period requires sufficient moisture.
Soil ginseng has strong resistance to adversity and can tolerate poor soil. It adapts to a wide range of soil conditions, but it is best cultivated in organic-rich and loose soil. Some varieties grow wild in damp areas.
【Disease and Pest Control】
Soil ginseng is rarely affected by diseases and pests, but improper management can lead to root rot and stem rot, and occasional damage to leaves by the striped night moth. Generally, agricultural control measures such as placing insect-proof nets and ensuring ventilation are taken. Additionally, spraying 70% methyl thiophanate at 800 times dilution or 77% kill-1000 times dilution every 15-20 days for prevention is recommended.
Once the disease occurs, spraying the above-mentioned pesticides every 3-5 days for 3-4 consecutive times and promptly removing diseased plants are necessary. After the condition stabilizes, new seedlings can be replanted.
