When is the right time and method to sow Isatis indica?

Sowing time of isatis indigofera

Isatis indigofera belongs to the Isatis indigofera plant, which can be planted once a year. The best time to sow Isatis indigofera is in spring, around the Qingming Festival, and no later than the Grain Rain season. The survival rate of seeds at this time is the best, and the temperature at this time is most suitable for the growth of Isatis indigofera.

Sowing method of Isatis indigofera

1. Loosening the soil and weeding

When sowing Isatis indigotica, the soil should be kept moist, which is conducive to germination. After the seedlings emerge, the soil should be shallowly hoeed to prevent the plants from being crushed. After the seedlings are determined, the soil should be loosened and weeded to keep the soil loose.

2. Thinning and finalization

When sowing Isatis indigo plant, after the seedlings emerge from the soil, pull out the particularly dense and weak seedlings. The height of the seedlings is about 6 cm, and they should be thinned out with a spacing of 6 to 10 cm. When thinning, remove the weak seedlings and leave the strong ones. If there is a shortage of seedlings, they need to be transplanted in time to make up for it.

Key points and techniques for growing Isatis indigofera

1. Top dressing and watering: When planting Isatis indigotica, the first fertilization needs to be done after the seedlings are established. Use about 10 to 13 kilograms of urea per acre of land. During the second and third times, top dressing is needed immediately after the leaves are harvested.

2. Prevent and control diseases and pests: When planting Isatis indigotica, you need to observe whether the plants are normal and use medication in a timely manner to ensure that the Isatis indigotica can grow and develop well.