The Chinese Evergreen, known scientifically as Aglaonema, is a popular houseplant often praised for its colorful foliage and adaptability. The answer to whether this plant can thrive in water is a clear yes; it is well-suited to long-term water culture, a method of passive hydroponics. This technique allows the Aglaonema to grow indefinitely without soil, relying only on water and a supplemental nutrient solution. Establishing the plant in this new environment requires careful preparation of the roots and a consistent maintenance schedule.
Transitioning the Chinese Evergreen to Water
The first step in moving an Aglaonema from soil to water is to select either a healthy stem cutting or a mature plant section. For a stem cutting, remove a piece several inches long, ensuring it contains at least one leaf node, which is the point where roots will emerge. If transitioning a full plant, carefully remove it from the soil and begin the thorough process of cleaning the root system.
All traces of the original potting mix must be completely washed away from the roots to prevent decay in the water environment. Soil particles left behind can decompose, creating an anaerobic condition that encourages harmful bacteria and root rot. Once the roots are clean, place the plant into a vessel, ensuring that only the roots or the lower stem nodes are submerged. Submerging the entire stem can encourage rot rather than root growth.
The selection of a container is important for long-term success. While a clear glass vase allows for easy monitoring of root health and water levels, an opaque or dark vessel can minimize algae growth. Algae competes with the plant for nutrients and sunlight, and its presence can quickly degrade the water quality. The vessel should be large enough to support the root mass without crowding, allowing for easy access when changing the water.
Routine Care and Environment
Once the Aglaonema is established in its water vessel, routine maintenance is necessary to maintain a healthy growing environment. The water should be replaced weekly or bi-weekly to refresh the oxygen supply and prevent stagnation. Stagnant water quickly loses dissolved oxygen, which is necessary for healthy root function and preventing rot.
When changing the water, gently rinse the roots and the inside of the vessel to remove any slimy buildup or algae. This cleaning prevents the proliferation of pathogens that could lead to root decay. Using purified, distilled, or rainwater is ideal, as standard tap water may contain chlorine or mineral salts that can accumulate and harm the sensitive water roots. If using tap water, allowing it to sit out overnight before use helps chlorine dissipate.
The Aglaonema thrives in bright, indirect light, which encourages strong growth and vibrant leaf coloration. Consistent indoor temperatures, ideally between 65°F and 80°F, are also preferred, as the plant is sensitive to cold drafts. Monitoring the roots for any signs of decay, such as becoming dark or mushy, allows for quick intervention by trimming away the affected sections with sterile scissors.
Supplying Essential Nutrients
Growing the Chinese Evergreen in water requires adding nutrients that would naturally be provided by soil. Water alone contains none of the necessary macronutrients or micronutrients required for sustained, healthy growth. Therefore, the plant cannot survive long-term without supplemental feeding.
A balanced liquid houseplant fertilizer or a specific hydroponic nutrient solution must be introduced into the water on a regular schedule. Since the roots are directly exposed to the solution, the concentration must be significantly lower than what is recommended for soil-grown plants. A dilution rate of about one-quarter to one-eighth of the package’s suggested strength is appropriate for water culture.
Applying this diluted nutrient solution once per month during the spring and summer growing season is generally sufficient. Over-fertilization is a common issue that can lead to salt buildup and cause chemical burn on the delicate water roots. During the fall and winter months, when the plant’s growth naturally slows, the frequency of fertilization should be reduced or stopped altogether.