1. Land selection and soil preparation: sunny sandy loam with good drainage, deep soil layer and rich humus should be selected in mountainous areas, hills and plains. Dig all the soil, dig 30 cm deep, remove weeds, apply base fertilizer, break the soil and rake it flat, make a border with a width of 1.2 m, and open a drainage ditch.

2. Seed propagation: After the seeds are collected in September, they are mixed and stored in wet sand. Sow in March-April of the following year. When sowing, shallow furrows of 2-3 cm should be opened, with the furrow spacing of 20 cm. After the seeds are drilled, cover them with fine soil, then cover them with grass and spray water, and pay attention to keep the soil moisture in the future. When the seedling height is about 5 cm, it can be properly thinned. Two years later, in winter and spring, the seedlings were dug out and transplanted, with the hole spacing of 20-25 cm, and 3-4 plants were planted in each hole. After planting, compact the roots and spray water.

3. Propagation by ramets: Dig out the mother plant in winter and spring, carefully peel off the tillering buds, so that each ramet has 1-2 buds, and plant them directly in holes, with 2-3 plants per hole.

On-site management:

1, intertillage weeding: Because the whole growth period is long, intertillage weeding should be carried out every other month for 1 time.

2. Top dressing: Top dressing with nitrogen fertilizer at seedling stage. After planting, apply 1 time human manure or compound fertilizer in spring and summer, and apply 1 time manure, calcium superphosphate, peat mud and other phosphorus and potassium fertilizers in autumn and winter. After each topdressing, it should be cultivated in combination with soil.

Pest control:

Black spot disease began to harm the tip of the leaf, turning yellow and brown, and gradually spread to the bottom of the leaf, and all the leaves died. You can use 1: 1: 100 bordeaux spray at the initial stage of the disease.