Search out a suitable site for the Centella asiatica. It thrives in full sun and wet sandy soils such as along wetland borders and in soggy lawns.
Lay down 2 to 4 inches of organic compost. Mix it 6 to 8 inches into the soil. This plant survives best in disturbed sandy sites with an abundant amount of organic material. Moisten the soil.
Plant seeds of Centella asiatica 1/2 inch deep and 12 inches apart. Once grown, the herb will fill in the spaces. Keep the seeds damp until they germinate.
Water the Centella asiatica regularly, especially if you planted it in a dry region. It can withstand flooding and actually thrives in it. Dry weather will cause it to disappear, but it will rebound when it receives moisture again.