Causes and treatments for yellowing dahlia leaves

1. Unsuitable soil

1. Reason: The yellow leaves of dahlia may be because the soil in which it is grown is not suitable for its growth. If the soil is underfertile or compacted, it may grow poorly and its leaves may turn yellow.

2. Treatment method: At this time, you need to replace the flower soil. First prepare some soft and thick new soil and expose it to the sun for disinfection. Then take the plant out of the old soil, remove the old soil in the pot, and fill it with new soil. Then use scissors to cut off the rotten roots and yellow leaves on the plant and plant it back in the pot.

2. Improper light exposure

1. Reason: It is suitable for growing in locations with moderate light intensity and long light duration. If the light in the place where it is grown is too weak or too strong, it may cause it to grow poorly and have yellow leaves.

2. Treatment method: Move the plant to a location with moderate light duration and intensity for maintenance. After a while, it will return to normal.

3. Excessive watering

1. Reason: Excessive watering is also one of the possible reasons why its leaves turn yellow. Because this will cause water to accumulate in the soil, soaking its roots and making it unable to absorb water from the soil normally. The leaves will turn yellow due to lack of water.

2. Treatment method: At this time, you need to dig it out of the soil and use scissors to cut off the rotten roots and yellow leaves. Then move it to a well-ventilated location to dry the cut ends, and then plant it in some new, loose, breathable, well-drained, and fertile soil for maintenance.