Begonia Leaves Turning Brown [Causes & Fixes]

Begonia Leaves Turning Brown [Causes & Fixes]


Begonia leaves turning brown is a common issue. You should determine the underlying issue. Take the necessary steps to revive your begonia's health.

Understanding Begonia Needs

Light Requirements

Begonias have specific light requirements. Ideally, you should place them in bright, indirect light. Direct sunlight can scorch their leaves and cause brown begonia leaves.

Watering Habits

Proper watering techniques are important for begonias. You should water them thoroughly but not overly saturated. Overwatering can lead to root rot and other issues. These can cause brown leaves on begonias. On the other hand, underwatering can also be a problem and may result in dry and crispy leaves.

Humidity Levels

Begonias are native to tropical regions. They thrive in humid environments. Low humidity levels can cause brown edges on begonia leaves. To combat this, place your begonia near a humidifier or on a tray of pebbles and water. This increases the humidity in its immediate environment.

Common Pests and Diseases

Identifying Pests

Aphids are small, pear-shaped insects. You can find them on the undersides of begonia leaves. They suck on the sap of plants, causing wilting and yellowing of leaves. To identify aphids, look for clusters of tiny insects on the leaves.

Spider mites are also common pests in begonias. These tiny eight-legged creatures feed on plant cells. They can cause begonia brown tips. Signs of spider mite infestation include webbing on the undersides of leaves and tiny white or brown spots.

Fungal and Bacterial Infections

Powdery Mildew is a fungal infection. It appears as a white powdery substance on the surface of begonia leaves. It thrives in warm, humid conditions. Powdery mildew can lead to begonia leaves curling and turning brown. Ensure proper air circulation around your plants to prevent powdery mildew.

Botrytis Blight is a bacterial infection. It can cause brown spots on begonia leaves. The infected areas may also have a fuzzy appearance. This disease can spread quickly in moist environments. You should treat it immediately. Removing infected leaves and improving air circulation.

Seasonal Considerations

Winter Dormancy

During winter, the days become shorter and temperatures drop. Begonias in blow molded nursery pots begin to enter a period of dormancy. The plant begins to conserve its energy by slowing down growth and shedding leaves.

This natural process is essential for the begonia's survival. It allows them to rest and prepare for new growth in the upcoming spring. During this time, you may notice your begonia leaves turning brown and falling off.

This is a normal part of the dormancy process. So there is no need to panic. Adjust your care routine accordingly by reducing watering frequency and fertilizer application.

Summer Stress

As temperatures rise in the summer months, begonias may experience stress due to intense heat and sunlight. This can result in begonia leaf edges turning brown.

Provide adequate shade to prevent summer stress. Maintain consistent moisture levels for your begonia. Consider moving your plant to a cooler and shadier location during the hottest part of the day.

Adjusting Care According to Seasons

To keep your begonias thriving throughout the year, adjust your care routine according to the changing seasons. During winter dormancy, reduce watering and fertilizer application. Provide adequate light for your begonia. In contrast, provide shade and consistent moisture levels during summer.

Soil Quality and Fertilization

Importance of Well-Draining Soil

Begonia plants require well-draining soil to prevent waterlogging. The ideal type of soil for begonias should be loamy with good drainage properties. It should contain a balanced mixture of sand, silt and clay. Organic matter can retain moisture while still allowing excess water to drain away. For example, compost or peat moss.

Choosing the Right Fertilizer

Begonias are heavy feeders. They require regular fertilization to maintain their vibrant foliage and stunning blooms. When choosing a fertilizer, consider the specific needs of your begonia plants.

I recommended a balanced fertilizer with equal NPK. You may need to use a specialized fertilizer if you notice specific nutrient deficiencies in your begonias.

Signs of Nutrient Deficiency

Regularly inspect your begonia plants for any signs of nutrient deficiency. Yellowing or browning leaves, stunted growth and wilting are common symptoms. Address the issue immediately in such cases. Adjust your fertilizer routine or use a specialized fertilizer to correct the deficiency.

Practical Tips for Begonia Care

Regular Inspections

Check the leaves and stems of your begonias for any signs of damage, discoloration, or pests. Begonia leaves turning brown on edges could indicate a fungal infection. Tiny holes in the leaves may be a sign of pest infestation.

Pay attention to how your begonias are growing. Are they producing new leaves and flowers? Is there any visible wilting or drooping? Changes in growth patterns can indicate issues with watering, lighting, or disease.

Pruning for Health

Regular pruning can keep your begonias healthy. Remove any dead or damaged leaves and stems, as well as any overcrowded or weak growth. This will help improve air circulation and prevent diseases.

Repotting Guidance

You should repot begonias every 1-2 years. Provide them with fresh soil and space for their roots to grow. Repot when roots are growing out of the drainage holes or wrapping around the pot.

When repotting your begonias, use a well-draining potting mix and a container with drainage holes. Gently loosen the roots. Remove any dead or damaged ones before placing the plant in plastic pots for plants. Water thoroughly after repotting. Avoid fertilizing for a few weeks to allow the plant to adjust.


If you notice begonias turning brown, identify and address the root cause as soon as possible. By following these tips and providing proper care for your begonia plant, you can enjoy vibrant and healthy leaves all year round.