C. asiatica has been planted in Quang Tho commune, Quang Dien district, Thua Thien-Hue province, Vietnam since 1995, and its produce has become popular as a vegetable and functional food in central and southern Vietnam. There are large C. asiatica plantations in this commune, with more than 250 households cultivating this herb covering a total planting area of ca. 70 ha, bringing stable income for the farmers there. Besides use as a vegetable, there are well established functional foods and products which have been developed from this herb such as medicinal tea, soluble matcha drink, and vacuum pressed C. asiatica leaves. This paper reports the results of the accumulation of madecassic acid, asiatic acid, terminolic acid and their glycosides in C. asiatica planted in Quang Tho commune, comparing Vietnam Good Agricultural Practice (VIETGAP) with an organic (ORGANIC) production technique, during fifteen harvests under the local meteorological conditions between the years 2021-2022 (Fig. ). This is the first time that chemically supplemented farming has been compared with organic techniques for production of triterpenoids in C. asiatica, a factor which is important for long-term sustainability in terms of environmental impact and the health of the farmers. The monitoring of seasonal variation generalises and adds detail to the specific findings of prior work, 7,8 validating actionable changes for producers.