Causes and treatments for yellowing leaves of Hosta

1. Unsuitable soil

Reason: The soil for planting hosta must be well-drained and highly air-permeable. If the soil for planting is thick and sticky, excessive watering will hinder the breathing of the roots, leading to rot and finally yellowing of the leaves.

Measures: The plant needs to be removed from the pot as soon as possible, the damaged roots need to be trimmed, the soil needs to be replaced with sandy soil with good drainage, and then replanted. If it is a potted flower, you can use loose culture soil.

2. Improper watering

Reason: When caring for the hosta, if you water it too much, water will easily accumulate over a long period of time. Especially when the soil drainage is poor, its roots will not be able to breathe, and then rot due to lack of oxygen, causing the leaves to turn yellow. However, it has a relatively high demand for water during its growth period, so you can water it a little more often, but be careful not to allow water to accumulate. However, if it is not watered enough during the growing period, its leaves will turn yellow due to lack of water.

Measures: If excessive watering causes water accumulation and yellow leaves, remove the plant from the pot, cut off the rotten roots, wait for it to dry, and then change the soil and replant it. If it is because of too little watering, you must replenish water in time. During its growing period, the soil in the pot should always be kept moist. You can spray water around it to maintain the air humidity. In daily maintenance, we must adhere to the principle of draining the plants when they are dry and wetting them when they are wet. Potted plants grown outdoors need to be drained after the rain.

3. Too much light

Reason: Hosta prefers shade and is not suitable for cultivation in places with too strong light. Once exposed to strong light, the leaves will easily grow poorly and gradually turn yellow.

Measures: It needs to be moved to a cool place and shade should be provided, the shade degree should be more than 80%.

4. Excessive fertilization

Reason: Hosta does not have high requirements for fertilizer. If excessive fertilizer is applied during its growth period, it is easy to burn the plant, causing the leaves to turn yellow and then fall off.

Measures: When too much fertilizer is applied, it is necessary to dilute the fertilizer in the soil by watering immediately, allowing the excess fertilizer to flow out from the holes at the bottom. If the situation is serious, you need to remove the plant from the pot, rinse the roots, and then change the soil and replant it. During daily maintenance, fertilization should be moderate and timely. You can apply some potassium dihydrogen phosphate before flowering. Be careful not to sprinkle it on its branches and leaves when applying fertilizer.