Causes and treatments for yellow iris leaves

1. Too much light

Reason: Iris prefers a semi-shady growing environment, so irises are often cultivated in greenhouses. If you grow irises outdoors, you should also pay attention to the light problem. If the sunlight is too strong, the leaves of irises will turn yellow.

Solution: Move the iris to a cool place for maintenance, or provide shade for it, then spray water on the leaves to prevent other leaves from turning yellow again. When growing irises outdoors, they need to be sprayed appropriately at noon to increase the air humidity to prevent the branches and leaves from becoming dehydrated.

2. Excessive fertilizer

Reason: Excessive fertilization will cause the soil to become compacted, affecting root growth and causing yellowing leaves.

Treatment: Use plenty of water for irrigation to allow the fertilizer to flow out of the drainage holes at the bottom of the pot, or immediately turn the pot over, rinse off the soil with water and then replant it in the pot. When fertilizing irises, it is sufficient to apply fertilizer once every autumn, and the frequency of fertilization should be increased appropriately during the growth period.

3. Too little watering

Reason: Iris does not need much water and is drought-tolerant. But if you water too little or water only half-way frequently, and the soil in the pot is too dry, the leaves will turn yellow.

Solution: Slowly add water to the plants. If you suddenly give it a lot of water, it will have trouble adapting. Therefore, you need to water in small amounts, and then replenish water on the leaves through a sprinkler to allow the plants to adapt. Once normal growth resumes, water normally. Generally water once every 7 days during the growth period. When the temperature drops, the amount of water should be slowly reduced, and it is best to keep the pot slightly dry.