Centella asiatica plants are creeping herbs with runners that lie on the ground. The herb's shovel-shaped leaves are approximately 1 inch long with scalloped edges and grow in alternating clusters along the stem nodes. The plant produces small pinkish-white or greenish flowers in dense clusters during the summer.
Centella asiatica thrives in USDA hardiness zones 7 to 11. This wetland plant is useful around the edges of water features. It grows best in full sun and damp soil. Centella asiatica propagates by creating new plants on its above-ground runners.
The above-ground parts of the Centella asiatica plant are used to improve memory and treat mental disorders. It is also used as a remedy for anxiety and depression. WebMD states that the herb has chemicals that increase collagen production, lower blood pressure in the veins and reduce swelling.