Jasmine plants thrive in bright, indirect sunlight. When they don’t receive enough light, their leaves may turn yellow due to reduced chlorophyll production. Chlorophyll is essential for photosynthesis, and without adequate light, the plant cannot produce enough energy to sustain healthy foliage. If your jasmine is indoors, place it near a south or west-facing window. Outdoors, ensure it’s in a spot with partial to full sun, depending on the species.
Yellowing leaves can signal root rot caused by overwatering or poorly draining soil. Jasmine plants prefer moist but well-drained soil. When roots sit in waterlogged conditions, they suffocate and decay, leading to nutrient uptake issues. The leaves turn yellow as a distress signal. To fix this, reduce watering frequency and ensure the pot or planting site has proper drainage. Let the top inch of soil dry out before watering again.
Jasmine plants require balanced nutrients, particularly nitrogen, iron, and magnesium. A lack of nitrogen causes older leaves to yellow first, while iron deficiency leads to yellowing between the veins of young leaves. Magnesium deficiency results in yellow patches between leaf veins. Use a balanced, water-soluble fertilizer formulated for flowering plants, and consider soil testing to identify specific deficiencies. Organic compost or Epsom salts (for magnesium) can also help.
Pests like spider mites, aphids, or whiteflies suck sap from jasmine leaves, causing yellowing and wilting. Fungal diseases, such as powdery mildew or leaf spot, can also discolor foliage. Inspect the plant regularly for tiny insects or unusual spots. Treat infestations with insecticidal soap or neem oil, and prune affected leaves to prevent disease spread. Ensure good air circulation around the plant to reduce fungal risks.
Jasmine plants are sensitive to extreme temperatures. Cold drafts or sudden temperature drops can cause leaves to yellow and drop. Similarly, excessive heat or dry air can stress the plant. Indoor jasmine should be kept away from air vents or heaters, while outdoor plants may need protection during frost. Maintain a consistent temperature between 60-75°F (15-24°C) for optimal growth.
Jasmine prefers slightly acidic to neutral soil (pH 6.0-7.0). If the soil is too alkaline or acidic, the plant cannot absorb nutrients efficiently, leading to yellow leaves. Test the soil pH with a kit and amend it if necessary. For alkaline soil, add sulfur or peat moss. For acidic soil, incorporate lime to raise the pH gradually.
Older leaves naturally turn yellow and fall off as part of the plant’s growth cycle. If only the lower, older leaves are yellowing while new growth remains healthy, this is likely normal senescence. Simply prune the yellow leaves to encourage new growth and maintain the plant’s appearance.
Recently repotted or transplanted jasmine plants may experience shock, causing leaves to yellow. This occurs due to root disturbance or adjustment to new soil conditions. Minimize stress by watering thoroughly after transplanting and avoiding fertilization for a few weeks. The plant should recover as it acclimates.
