Although many plants will put out roots in a jar of water, few will grow there permanently. Plants that can be grown in water are a real treat for amateur botanists of all ages. Aquatic growers get the rare opportunity to watch the roots branch and spread out as the plant grows.
The Peace Lilly is a popular plant both indoors and outdoors, known for its broad green leaves and its ability to clean the air. Although peace lilies grown in soil like to go dry periodically, this plant actually does quite well as an aquatic plant grown in nothing but a jar of water. Fill the bottom few inches of the pot with marbles, then remove the peace lilly plant from its container and rinse off the roots. Finally, place it in the pot.
Lucky bamboo is one of the most popular plants to grow in a jar of water. An element ornamental named for its resemblance to bamboo (which it is not related to) lucky bamboo can be trained into elaborate decorative patterns. When grown as an aquatic plant, lucky bamboo only requires fertilizer every few weeks, and needs very little light. Lucky bamboo is quite sensitive to chlorine, so tap water should be left out overnight before it is given to the plant. It can grow with almost no light or moderate, indirect sunlight, but does not like direct light.
English Ivy is a climbing vine that inspires strong sentiments among many plant fans. English Ivy gives old buildings character and charm as it spreads up their stolid brick walls, grasping in thick green sheets. English Ivy it is also known as a fast-growing, stubborn invasive plant overwhelming everything native in its path. What it is not known for is its ability to grow in a jar of water. English Ivy loves humidity, and makes an excellent aquatic plant. It should be given bright but indirect sunlight and fed monthly during the spring and summer, but not during fall and winter.