Key Cultivation Techniques and Management Methods for Schizonepeta

For cultivating Schizonepeta (Schizonepeta tenuifolia), loose, fertile soil is best. Generally sown in April, first soak the seeds for 12-24 hours, then mix with an appropriate amount of fine sand or fine soil for sowing. After sowing, cover with 1-2 cm of soil, press down lightly with the foot, then level with an iron rake, and water. Maintain suitable temperature and humidity, wait for seedlings to emerge, and after emergence carry out cultivation and weeding, fertilizing, watering, pest and disease control, and other tasks.

1. Soil

Schizonepeta has strong adaptability and is not demanding about soil; it can be grown in ordinary soil, but grows better in loose, fertile soil. Apply plenty of base fertilizer, mainly compost, barnyard manure, and organic fertilizer. Prepare the land and make beds; depending on the terrain, make flat beds or raised beds respectively.

2. Sowing

Sow in April; first soak the seeds in water for 12-24 hours, remove and dry them in a ventilated, dry place, and when there is no water on the seed surface, mix with an appropriate amount of fine sand or fine soil for sowing. After sowing, cover with 1-2 cm of soil, press down lightly with the foot, then level with an iron rake, and water. After sowing, when the soil temperature is 16-18°C, it takes 10-15 days for seedlings to emerge; if the soil temperature is 19-25°C and humidity is suitable, seedlings can emerge in about 1 week. Keep the soil moist before and after emergence.

3. Cultivation and Weeding

When the seedlings are 6-10 cm tall, thin out the overly dense weak and small seedlings; when the seedlings are 10-15 cm tall, thin to a final stand. When the seedlings are about 5 cm tall, loosen the soil with a small hoe; after entering the growth period, do this about once every 20 days, or carry out appropriate cultivation 1-2 times, and stop loosening the soil after the rows close.

4. Fertilizing

When the seedlings are 15-20 cm tall, scatter some chemical fertilizer along the rows, applying 10-15 kg of urea and 25-40 kg of cake fertilizer per mu; when the seedlings are 20-25 cm tall, add 10 kg of potassium chloride; when the seedlings are over 30 cm tall, broadcast 60 kg of decomposed cake fertilizer per mu, and it can be combined with a small amount of phosphorus and potassium fertilizer.

5. Watering

During the seedling stage, water frequently to promote growth; after the plants mature, drought resistance increases and watering can be stopped, but in summer during long droughts without rain, when soil moisture content is below 8% and the plants show wilting, light watering should be carried out, and the amount of water each time should not be too large.

6. Pests and Diseases

Diseases mainly include root rot, damping-off, stem blight, and black spot, while insect pests include cutworms, mole crickets, and silver Y moths, among others; these should be controlled promptly.