Is it safe to place the Kalanchoe plant in the bedroom? Analysis of oxygen supply from Kalanchoe at night.

Can long-lived flowers be placed in the bedroom?In the indoor green plant boom, long-lived flowers have received special attention due to their unique characteristics. As a type of succulent plant in the Crassulaceae family, they have small plants, rich flower colors, and a long blooming period. However, as a special space, the bedroom requires a comprehensive consideration of the plant's characteristics and the relationship with human health.I. Analysis of Long-lived Flower Safety1.1 Toxicity Test Verification-tested by the Institute of Plant Science, Chinese Academy of Agricultural Sciences, long-lived flowers contain no alkaloids, cyanogenic glycosides, or other toxic components. Contact with the sap does not cause allergic reactions, and ingestion of a small amount may only cause slight gastrointestinal discomfort, confirming their safety for home planting.1.2 Key Points for Scientific CareIt is recommended to wipe the leaf surface with a damp cloth monthly to prevent dust accumulation from affecting photosynthesis. In spring and autumn, they can be placed on the windowsill of the bedroom to receive morning light, while in summer, they need to be shaded and protected, maintaining an optimal growth temperature of 15-25°C.II. Dual Benefits of Air Optimization2.1 Oxygen Supply Mechanism at NightThe unique metabolism of Crassulaceae allows them to continuously release oxygen at night (an average of 0.8L/m²·h), and a plant with a pot diameter of 12cm can increase the oxygen content in a space of 3-5㎡, making it especially suitable for sealed bedroom environments.2.2 Air Purification TestExperiments by the Beijing Environmental Monitoring Center show that a single long-lived flower can absorb formaldehyde at a rate of 0.03mg/h and purify benzene compounds at an efficiency of 1.2μg/m³·h. It is recommended to place 2-3 pots every 5㎡ to form a purification network.III. Space Aesthetics and Feng Shui Layout3.1 Visual Adjustment SolutionIt is recommended to place the plant at a 45° angle on the bedside table, paired with a white ceramic pot to create a minimalist style. During the winter blooming period, red pots can be replaced to match the festive atmosphere, and the plant height is suggested to be controlled between 25-30cm.3.2 Traditional Meaning AnalysisIn feng shui, placing the plant on an east-facing windowsill can enhance health luck, while the southwest direction is beneficial for family harmony. The health status of the plant directly affects the feng shui effect and requires keeping the leaves full and free of browning.IV. Guidelines for Special ScenariosFor children's rooms, it is recommended to use wall-mounted planting boxes. For the elderly, an automatic irrigation system can be paired, and for newlywed bedrooms, a heart-shaped multi-color arrangement can be created. Remember to rotate the pot regularly to maintain a symmetrical and beautiful plant shape.Overall, long-lived flowers are one of the few bedroom green plants that combine both safety and functionality. Through scientific placement (1.2-1.5m from the bed is optimal) and reasonable care (applying phosphorus and potassium fertilizer monthly in spring and autumn), they can improve the indoor microenvironment and create a personalized aesthetic living space.