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Why Are Your Bouganvilla Plant Leaves Turning Yellow:
Causes and Solutions

Updated: April 12, 2023

Bougainvillea plants are some of the most stunning and vibrant plants that you can cultivate. They are known for their bright and colorful blooms that can last for several months. However, one of the most common problems that plant owners face is yellowing leaves. If you notice yellow leaves on your bougainvillea plant, do not worry. There are several causes and solutions to this problem.

Causes of Yellowing Leaves on Bougainvillea Plants

Overwatering

Overwatering is one of the most common reasons why bougainvillea plant leaves turn yellow. When you water your plant too frequently, the soil becomes waterlogged, and the roots cannot absorb oxygen. This leads to root rot, which results in yellow leaves.

Underwatering

On the other hand, underwatering can also cause yellow leaves on bougainvillea plants. When you do not water your plant enough, the leaves will turn yellow and wilt.

Nutrient Deficiencies

Bougainvillea plants require specific nutrients to thrive, including nitrogen, potassium, and phosphorus. If your plant is not getting enough of these nutrients, it can lead to yellow leaves.

Pests and Diseases

Pests such as spider mites and aphids can attack your bougainvillea plant, leading to yellow leaves. Additionally, diseases such as leaf spot and powdery mildew can also cause yellowing of the leaves.

Solutions to Yellowing Leaves on Bougainvillea Plants

Adjust Watering Habits

To prevent overwatering, make sure that your plant is in a well-draining pot or soil. Allow the soil to dry out completely before watering again. On the other hand, if you are underwatering your plant, increase the frequency of watering.

Fertilize Your Plant

If nutrient deficiencies are causing yellow leaves, fertilize your plant with a balanced fertilizer that contains nitrogen, potassium, and phosphorus. Make sure to follow the instructions on the fertilizer package carefully.

Pest Control

If pests or diseases are causing yellowing of the leaves, use an appropriate pesticide or fungicide to get rid of them. Make sure to follow the instructions on the product label carefully.

FAQs

How often should I water my bougainvillea plant?

You should water your bougainvillea plant when the top inch of soil feels dry to the touch.

Can I use any fertilizer for my bougainvillea plant?

No, you should use a fertilizer that contains nitrogen, potassium, and phosphorus in a balanced ratio specifically formulated for bougainvillea plants.

Can I prune my bougainvillea plant if it has yellow leaves?

Yes, pruning can help promote new growth and improve the overall health of your plant. However, make sure to sanitize your pruning tools before and after use to prevent the spread of diseases.

What is causing white spots on my bougainvillea plant?

White spots on your bougainvillea plant could be caused by mealybugs or powdery mildew. Use an appropriate pesticide or fungicide to get rid of them.

In conclusion, yellowing leaves on bougainvillea plants can be caused by several factors such as overwatering, underwatering, nutrient deficiencies, pests or diseases. It is important to identify the cause of yellowing leaves early and take appropriate measures to correct it. With proper care and attention, your bougainvillea plant will continue to thrive and produce beautiful blooms.

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