Heteranthera zosterifolia, commonly known as stargrass, is a striking stem plant from South America with a distinctive whorled leaf arrangement that gives each section of the stem a star-like appearance when viewed from above. Its fine, bright-green leaves and branching growth habit create a light, airy background texture that is popular in both nature aquarium and Dutch aquarium styles.

It grows best with medium light and CO2 supplementation, which encourages the compact, bushy growth and vivid colour this plant is known for. Without CO2 it can still be kept but tends to grow more slowly and with a looser, less structured habit. Regular trimming promotes dense regrowth and keeps the plant full from base to tip.

Supplied as an established potted plant, Heteranthera zosterifolia suits aquariums from 80 litres upward and works well planted in groups in the background or midground. Topping and replanting cuttings at the base is the standard method for maintaining full, bushy growth over time.