The leaves of the Water Wisteria depend on the temperature of the water - at higher temperatures they are large with more space between them; however if the temperature is lower they are smaller and much closer together!
The Water Wisteria can be a beautiful and fulfilling addition to an aquarium if it is given proper care. This hygrophila grows to a maximum height of 20 inches (50 cm) at a moderate rate, and goes best as a midground or background plant. They should be planted with only a few stalks together, and each plant should have space between it and the next one because they will grow and need plenty of room to spread. The leaves themselves can grow quite large - up to 4 inches long!
The water conditions should be regularly checked to help the Water Wisteria thrive. It needs a pH between 6.5 and 7.5, and very bright light to keep it growing and looking healthy. Make sure to perform regular water changes and fertilize regularly after each change. Liquid fertilizers with iron on them should be used after each change and carbon dioxide fertilization is also a good idea. The bottom substrate should be nutrient-rich. Propagation of the Water Wisteria is done by planting the side shoots of the main plant or by planting cuttings.
For more Information on keeping a planted aquarium see:
About Planted Aquariums, Adding Aquatic Plants For a Healthy Aquarium
This hygrophila originates in India, Thailand, and Malaya.
Temperature: 74-82° F (23-28° C)
pH: 6.5 - 7.5
Light level: Extremely Bright - 75 watts per 25 gallons
The Dwarf Rotala propagates from cuttings and side shoots.
The Water Wisteria is readily available.