1. Excessive wateringIf the leaves of nasturtium turn yellow and the soil feels moist, it is probably caused by over-watering. If you discover it in time, you can pad the pot and place it in a well-ventilated place to allow the water to evaporate quickly. If it is discovered too late, the plant's roots have already rotted and need to be pruned and replanted. 2. The soil in the pot is too dryIf the leaves of nasturtium turn yellow, the soil feels dry to the touch, and you weigh the soil in the pot with your hand and it feels particularly light, it is probably caused by the soil being too dry. If you discover it in time, soak the pot for the nasturtium, or slowly water the soil thoroughly, and then pick off the yellow leaves. 3. Temperature is too lowIf the yellow leaves of nasturtium occur in winter and the maintenance temperature is lower than 10℃, it is mostly caused by low temperature. The potted plants should be moved to the indoor heating room in time to overwinter. The indoor temperature is low, so you can cover them with a plastic bag to keep warm and open it for ventilation at noon. 4. Too much lightIf the yellow leaves of nasturtium occur in summer and the potted plants are exposed to the scorching sun, it is mostly caused by too strong light. You should move the potted plants to a cool and ventilated place in time, or put up a shade net and spray water around the plants frequently to increase humidity and reduce temperature. 5. Improper fertilizationIf the yellow leaves of nasturtium occur within 1-3 days after fertilization, it is mostly caused by improper fertilization, which may be due to excessive fertilization or the application of uncomposted fertilizer water. You can flush the potting soil with water to flush out the fertilizer water, dilute it and reduce the degree of fertilizer damage. |
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