What Causes Black Spots on Hydrangea Leaves
For those who are concerned, this article explains the possible reasons for black spots on hydrangea leaves. If there are any inaccuracies, please feel free to correct them!
What Causes Black Spots on Hydrangea Leaves
Black spots on hydrangea leaves could be caused by sunburn or other factors. Good ventilation is necessary in daily maintenance. If pests are the cause, they can be manually removed, and fungicides such as methyl thiophanate and zineb can be sprayed. During the care of hydrangeas, they should be provided with ample light, water, and fertilizer to promote the growth of the branches and flowers, and to enhance the plant's resistance to diseases.
What Causes Black Spots on Hydrangea Leaves
Black spots on the leaves of hydrangeas may indicate a black spot disease infection, which can cause black spots to appear on the leaves and affect the growth of the entire plant.
Black spots on hydrangea leaves could also be caused by sunburn or other factors. Good ventilation should be maintained, and fungicides such as carbendazim, methyl thiophanate, and zineb should be sprayed.
If caused by excessive sun exposure in summer, direct sunlight can be avoided, and the plant can be moved to a shady place after sunburn. If overwatering and over-fertilizing cause root rot, watering and fertilizing should be controlled, and the decayed roots should be removed.
What to Do If Hydrangea Leaves Have Black Spots
Using carbendazim wettable powder or methyl thiophanate wettable powder can effectively prevent and treat black spots on hydrangea leaves.
Preventing Black Spots on Hydrangea Leaves
Hydrangea leaves with black spots can be kept in a well-ventilated area. During this period, they should be provided with ample light, water, and fertilizer to promote the growth of the branches and flowers. Appropriate growing conditions and care methods can ensure normal growth of the plant and enhance its resistance to diseases.
The content shared above about the causes of black spots on hydrangea leaves is hoped to be helpful for plant enthusiasts!