What to do when Blueberry plant leaves turn yellow & fall off

The leaves of blueberry plants can turn yellow and brown for reasons within or beyond your control. Here are the most common causes and steps you can take to make the foliage of the blueberry plant look green and healthy again.

Underwatering or overwatering is bad for Blueberry plants

Improper watering is usually the main culprit when yellow or brown leaves start to develop on blueberry plants. Plants like blueberry plants typically need regular watering to be able to mature and produce a good yield.

Underwatering, as a result, may cause the leaves to turn yellow if a key ingredient of photosynthesis goes missing. Overwatering may also lead to the same effect. Too much water can clog the soil and prevent the roots of the blueberry plant from accessing oxygen found in the small pockets of air in the soil. Prolonged exposure to overwatered soil conditions will eventually lead to root rot and cause leaves to turn yellow and fall off.

Proper drainage of water from soil

You won’t be able to properly gauge the frequency of watering the blueberry plant needs if it is being grown in soil that doesn’t drain well. Compacted soil can cause a number of issues for blueberry plants such as preventing root growth, reducing nutrient absorption, and preventing oxygen absorption. All of this can cause leaves to turn yellow and fall off. you will know if the soil is waterlogged by creating a tiny hole on the soil surface and filling it with water. If the water hasn’t drained after a few hours then you are dealing with clogged soil problems.

To stop more leaves from turning yellow, you will most likely need to transplant the blueberry plant into soil that drains well. One way of doing this is by mixing the soil with material like perlite, compost, and shredded leaves.

Excessive sunlight or lack of sunlight

Yellow leaves can also form on blueberry plants due to changes in sunlight conditions. Prolonged exposure to direct sunlight, for example, can harm plants because it can result in sunburn and the scorching of leaves. Lack of sunlight could have the same negative effect on blueberry plants as it would result in the leaves not getting enough light to drive photosynthesis. Lack of energy would then cause the leaves to wilt and gradually become discolored.

Try to position the blueberry plant or provide it enough cover or exposure so that it receives an optimal amount of sunlight, which is about eight hours of sunlight per day.


  • Bush:

    My blueberry bush is turning yellow and red. It’s also not producing any berries. I think I am doing alright with the watering and sunlight so a bit confused as to why this is happening to my plant. Is there something with the soil I need to check? The acidity perhaps?

  • Lochness:

    HELP! My blueberry plant leaves are turning yellow and also developing these weird black spots. I have the climax and premier varieties of the Southern High Bush. What’s wrong with my plant? Is it dealing with some kind of fungal plant disease?

  • First plant:

    This is the first time growing a blueberry plant and fair to say I am not having much success. The leaves are turning a reddish yellow color. Can anyone point me in the right direction?

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