Aglaonema, commonly known as the Chinese Evergreen, is a tropical houseplant appreciated for its colorful foliage. Native to the humid forest floors of Southeast Asia, this plant traditionally thrives in soil but possesses remarkable adaptability. Aglaonema can grow in water indefinitely. This water-based method, often called hydroponic or water culture, is favored for its clean aesthetic and is an excellent way to display the plant’s root structure.
Preparing Aglaonema for Water Culture
There are two methods for establishing a Chinese Evergreen in a water environment. The first involves taking stem cuttings from a mature plant. For successful propagation, select a healthy stem section that includes at least one leaf node, as new roots will emerge from this point. After making a clean cut, the cutting is placed directly into a container of water, ensuring the node is fully submerged while the leaves remain above the surface.
The second, more involved method is transitioning an entire soil-grown plant into water culture. Begin by gently removing the plant from its pot and meticulously washing all soil particles from the root system. Clean the roots completely, as any residual organic matter can quickly decompose in water, leading to bacterial or fungal growth that causes root rot. Once clean, the plant is placed in a non-porous container, such as a glass jar, which allows the root crown to sit just above the waterline. While clear glass offers an attractive view, a dark or opaque container may be preferable initially as it helps inhibit the growth of algae on the roots and the container walls.
Daily Maintenance and Environmental Needs
Once the Aglaonema is established, maintaining water quality and providing appropriate environmental conditions is key. The water must be changed completely every five to seven days to prevent bacteria and fungi that can cause the stem to rot. When replacing the water, use room-temperature water that has been allowed to sit overnight to help chlorine dissipate, or use distilled water to avoid mineral buildup.
The container should be cleaned during the water change to scrub away developing algae, which competes with the plant for light and nutrients. The Aglaonema should be placed in a location that receives bright, indirect light; direct sunlight can scorch the leaves. Optimal growth occurs when the ambient temperature is consistently between 65 and 75 degrees Fahrenheit. Keep the plant away from cold drafts or direct airflow from heating or cooling vents. Any leaves or roots that yellow or become soft and mushy should be promptly trimmed away with sterilized scissors to maintain the plant’s health and the water’s cleanliness.
Addressing Long-Term Nutrient Requirements
Unlike soil, which acts as a nutrient reservoir, plain water does not contain the elements necessary for long-term plant health. Manual supplementation is necessary for a Chinese Evergreen grown in water culture to thrive. The plant requires a balanced, water-soluble fertilizer designed for houseplants, formulated to deliver nitrogen, phosphorus, and potassium.
The fertilizer concentration must be significantly reduced to accommodate the plant’s aquatic environment. Dilute the liquid fertilizer to a weak solution, using one-quarter to one-eighth of the strength suggested on the product label. This diluted nutrient solution should be added to the water once a month during the active growing season, which spans spring and summer. Insufficient nutrients will manifest as pale, undersized leaves or a general stunting of growth, signaling the need to slightly increase the frequency or concentration of the feeding schedule.