Why Do Lily Plant Leaves Turn Yellow and Fall Off
Lilies are loved for their elegant flower posture, but during maintenance, the yellowing and falling of leaves often困扰 enthusiasts. This article systematically analyzes the causes of yellow leaves from four dimensions: lighting, temperature, watering, and soil, and provides corresponding solutions to help you restore the lustrous green leaves of lilies.
Yellow Leaves Caused by Improper Lighting Management
Symptoms of Insufficient Light
The plant stems are thin and weak, the lower leaves turn yellow first, and the new leaves are lighter in color and smaller in area.
Scientific Lighting Supplement Plan
Keep full sun in spring and autumn, use shading nets in summer to filter strong midday light, and use supplemental lights in winter to maintain a 14-hour/day light cycle.
Metabolic Disorders Caused by Imbalance in Temperature
Characteristics of High Temperature Damage
The edges of the leaves show symptoms of burnt and withered spots, accompanied by the shedding of flower buds, and continuous temperatures above 28°C at night will accelerate yellowing.
Three-Dimensional Cooling Techniques
Adopt the "Three-Layer Cooling Method": increase humidity by misting the leaves + place a water tray at the bottom of the pot for evaporation cooling + install a circulating fan in the environment.
Water Control Failure Induces Root Rot
Diagnosis Points of Waterlogging Damage
The base of the bulb becomes soft and changes color, white fungal hyphae are visible on the soil surface, and yellowing often spreads from the tip to the petiole.
Accurate Irrigation Guidelines
Use the "Bamboo Stick Test Method": insert a roasted bamboo stick into the potting soil for 15 minutes and then pull it out, only the tip is slightly wet when watering thoroughly.
Soil Hardening Hinders Nutrient Absorption
Symptoms of Soil Hardening
Water stays on the surface for a long time when watering, obvious cracks appear at the edge of the potting soil, and new roots show a spiral curling pattern.
Substrate Improvement Plan
Mix peat soil, perlite, decomposed leaf soil, and vermiculite in a ratio of 4:3:2:1, and add 5% fermented pine phosphate every quarter to improve the structure.
By systematically adjusting the four elements of lighting, temperature, water, and soil, and combining regular observation of the leaf condition, the yellowing problem of lily leaves can be effectively prevented and treated. It is recommended to establish a maintenance log to record changes in environmental parameters, as prevention is better than cure, keeping the lilies in the best growing condition at all times.