Parrot's feather

Parrot's feather (Myriophyllum aquaticum) is a perennial aquatic plant belonging to the Haloragaceae family. It is highly valued in the nursery industry and water gardening for its feathery, bright green foliage and its ability to provide structural complexity in artificial water features.

Native to the Amazon River basin and other parts of South America, this species has been introduced globally. It is commonly cultivated in garden ponds and aquariums, where it serves both aesthetic and ecological roles, such as providing oxygenation and shade for aquatic fauna.

The botanical structure consists of long stems with whorls of finely divided leaves. The plant exhibits dimorphism: the submerged leaves are thin and delicate, while the emergent stems, which can rise several inches above the water surface, have a stiffer, more robust appearance, resembling a miniature conifer.

Cultivation requirements are relatively straightforward, focusing on adequate sunlight and nutrient-rich substrate. The plant thrives in stagnant or slow-moving water with temperatures ranging from 18°C to 26°C. Propagation is primarily achieved through stem cuttings, which root easily in damp soil or directly in the water column.

In addition to ornamental use, the crop helps stabilize pond ecosystems. Growers should be aware that in warm climates, it can become an aggressive weed, necessitating manual harvesting or mechanical control. Common issues include aphid infestations on the emergent parts or nutrient deficiencies, which are easily corrected with liquid fertilizers.