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Centella asiatica, commonly known as centella, Asiatic pennywort or Indian pennywort or Gotu kola, is a herbaceous, frost-tender perennial plant in the flowering plant family Apiaceae, subfamily Mackinlayoideae. It is native to wetlands in Asia. It is used as a culinary vegetable and as medicinal herb.
Description
The flowers are white or pinkish to red in color, born in small, rounded bunches (umbels) near the surface of the soil. Each flower is partly enclosed in two green bracts. The hermaphrodite flowers are minute in size, less than 3 mm (0.12 in), with five to six corolla lobes per flower. Each flower bears five stamens and two styles. The fruit are densely reticulate, distinguishing it from species of Hydrocotyle which have smooth, ribbed or warty fruit. The crop matures in three months, and the whole plant, including the roots, is harvested manually.
Habitat
Centella asiatica is indigenous to the Indian subcontinent, Southeast Asia, and wetland regions of the Southeastern US. Because the plant is aquatic, it is especially sensitive to biological and chemical pollutants in the water, which may be absorbed into the plant. It can be cultivated in drier soils as long as they are watered regularly enough (such as in a home garden arrangement).
Culinary use

Gotu kola_By Takeaway – Own work, CC BY-SA
Where can i purchase Gotu Kola (Centella asiatica) plant or seeds on the Sunshine Coast
Hi Rick
You could try YANDINA Community Gardens for a start.