Generally speaking, the propagation of sweet elephant grass is mainly based on sowing, and it is generally to raise seedlings before transplanting, or to divide plants, but the method of artificial division of plants costs a lot of money.

Sweet elephant grass grows slowly in the early stage, so it is often attacked by weeds. Pay attention to weeding and loosening the soil, but don't hurt the roots of plants. Its regeneration speed is extremely fast and its tillering ability is strong, so the demand for water and fertilizer is large.

In order to obtain higher yield, timely irrigation and appropriate topdressing should be paid attention to at seedling stage. The soil in southern China is mostly cohesive red soil, which may cause soil hardening and affect seedling emergence after watering. At this time, it should be handled in time to loosen the surrounding soil layer. Generally, seedlings can emerge in 7~ 10 days after sowing, and tillering begins in 15~20 days.

When the seedlings grow to 20-25 cm (20-30 days), they can be taken out and transplanted. There is a certain tillering phenomenon at seedling stage. In order to expand the planting area, tillers can be partially transplanted.

Sweet grass likes water and fertilizer. If the supply of water and fertilizer can be satisfied, it can promote the early tillering of plants and accelerate the growth of tillering seedlings, thus increasing the yield. Sweet elephant grass has a long utilization cycle and can be harvested continuously for 7 years. Then anti-freezing measures should be taken in winter, and areas where the temperature stays above zero in winter can naturally overwinter; In areas with long frost period, the soil should be cultivated to protect or cover hay or plastic film for wintering.