When hydrangea leaves turning yellow turn yellow it is a sign that the plant needs to put its energy into the most important task, producing blooms. This means that it can’t give enough attention to its lower leaves, which also need sunlight to photosynthesize, so it lets them go and puts all of its effort into flowering.

One of the main reasons for hydrangea leaves turning yellow is nutrient deficiency. Hydrangeas are heavy feeders and they need a steady supply of nutrients in order to thrive. This can be caused by a lack of water, soil deficiencies, improper fertilization or even pests and disease.

Yellowing Hydrangea Leaves: Causes and Cures for a Colorful Recovery

If the hydrangea is not getting enough light it will lose its green color and may begin to turn yellow or brown. The solution is to move the plant to a more sunny location or to add an extra shade structure over it to block out the harsh midday sun.

Another common cause of hydrangea leaves turning yellow is overwatering. Hydrangeas don’t like to be wet and will start to rot in these conditions. To help avoid this, you should use a good drainage layer when planting or when transplanting and limit how much you water them.

If the hydrangea has a nutrient deficiency then you will need to feed it with a balanced fertilizer that contains all of the essentials. You should also check the soil pH level to make sure it is in the correct range. If it is too high, you will need to acidify the soil to prevent nutrient deficiency and yellowing of the leaves.

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