The latest planting techniques and method tutorial for black cohosh

Black cohosh, also known as Longyan root and Zhouma, is a perennial herbaceous plant in the buttercup family, Ranunculaceae, genus Cimicifuga. Its rhizome can be used as medicine, with effects of clearing heat and detoxifying, and lifting yang qi; it is mainly used for wind-heat headache, sore throat, and so on. So how should black cohosh be planted? Let's take a look at the detailed introduction below.

1. Site selection and land preparation

Black cohosh is suitable for growing in areas at an altitude of about 1000 m. It is best to choose deep soil rich in humus on a semi-shaded slope or in well-drained sandy loam. After choosing the planting site, first remove field debris, deep plow the soil 30-40 cm, apply 1000-2000 of decomposed organic fertilizer per mu, break up the soil clods, rake fine and level, then make beds. The beds should be 20 cm high and 100-130 cm wide.

2. Sowing

Sowing can be done in spring and autumn. In spring, sow in March-April; in autumn, sow in 40 month. When sowing, first open shallow furrows on the bed surface at a row spacing of 20-25, with a furrow depth of 4-5 cm. Sow the seeds evenly in the furrows in rows, cover with a layer of fine soil, and press lightly. After sowing, if the soil is dry, water once thoroughly to keep it moist, then cover with a layer of rice straw to keep warm and moist. Autumn sowing is the same as spring sowing, but in northern regions attention should be paid to insulation measures, or cultivation in greenhouses should be used.

3. Field management

After emergence, water promptly according to soil conditions when dry, keeping the soil moist to promote seedling growth. During the seedling stage, cultivate and weed promptly to loosen the soil, but pay attention to the depth of cultivation to avoid damaging the seedling roots. When cultivating and weeding, topdress according to seedling growth. During the seedling stage, topdressing should mainly be nitrogen fertilizer. After the rainy season, drain and earth up promptly to avoid root rot or pest and disease problems caused by waterlogging. Two-year-old black cohosh bears fewer fruits, and the seed quality is also poor, so cut off the buds when they appear, allowing more nutrients to flow into the root system, promoting robust root growth and preparing for fruiting the following year.

4. Pest and disease control

Black cohosh has relatively few pests and diseases. The main disease is leaf spot, which damages leaves, usually occurring in August-September. Spray Bordeaux mixture before onset for prevention, and spray zineb during onset for control. The main pest is white grubs, which damage the plant root system. White grubs usually occur in May-June, burrowing into the soil and gnawing the roots, causing the plant to gradually wither and die. Rogor emulsifiable concentrate can be used as a root drench for control.

The above is an introduction to black cohosh planting techniques. We hope it can help you. To learn more related knowledge, please stay tuned to us.