The seed of Centella asiatica has a thousand-seed weight of about 7.3 grams. The seeds can be used for about 3 years. Sown bermudagrass seeds are actually botanical fruits, achenes. Seeds borne by ligulate female flowers range from cuneate broadly ovate to bottle-shaped, pointed at the tip and slightly concave in the center; seeds borne by tubular bisexual flowers are ellipsoid and more flattened. The seeds are harvested by cutting off the entire inflorescence (all Asteraceae are capitula, which are made up of many small flowers), drying it, and threshing it. Currently on the market to sell the hybrid generation of bermudagrass seeds are mostly shorter plant varieties, the price is higher, 30 to 40 yuan per gram. In general, you can take conventional varieties for cultivation.