Why Are My Begonia Leaves Turning Yellow and Dropping?

If the begonias are turning yellow and the leaves seem to be dropping, it is mostly because of overwatering or poor drainage. This causes the roots to suffocate.

Can Begonias Be Grown Indoors as Houseplants?

As wide varieties thrive in warm temperatures, begonias can be grown at home. This is because, in their original habitat, they grow on shaded forest floors. So, even if your home receives less light, the begonias will surely survive.

Do Begonias Need Direct Sunlight or Shade?

Begonias can tolerate full sun and even shade. In colder regions, the plant can tolerate more light. In warm climates, they should be kept in the shade to prevent leaf burning.

How to Care for Begonias So They Bloom All Season?

Native to South and Central America, Asia, and Africa, begonias are semi-tropical ornamental plants. They are grown for their beautiful flowers and brightly colored leaves. With their color ranging from silvers and greens to reds, pinks, whites, and creams, they create a beautiful view in the garden. They are low maintenance houseplant, thus making them a perfect choice for beginners.

Some thrive in partial or full shade, while others may tolerate a bit of sunlight. While they are often seen as a bit fussy, caring for them is surprisingly easy once you understand their basic needs. To help you care for begonias, this blog explains their different needs.

Understanding Begonia Types: Wax, Tuberous, and Rex

Begonias come in different types, and here are the three most commonly grown plants -

Wax Begonias	Wax begonias have waxy green or bronze foliage, and they produce blooms in red, pink, or white. They grow 6-12 inches tall and wide. Wax begonias are commonly grown as bedding plants.
Tuberous Begonias	They grow from tubers and do not actively grow in winter. They produce large beautiful flowers. The trailing habit of the flowers makes them best for hanging baskets.
Rex Begonias	They are known for their beautiful, decorative foliage. Their leaves come in several shapes and patterns. The leaves also range in color, from hues of pink to burgundy, and purple, green, and silver.

Light and Temperature Requirements for Begonias

Sunlight

Begonias need at least 3-6 hours of indirect sunlight every day. Here are the lighting requirements, depending on whether you keep them indoors or outdoors.

Indoor Light Placement: It is best to place them where there is a little shade, and the room also gets natural light. This replicates their natural habitat, where the tall trees in the forest protect them from harsh sunlight that may cause the leaves to burn or wilt.
Outdoor Light Placement: If planting begonias outdoors, consider a space that receives morning sun and afternoon shade. This is because morning sunlight is gentle, which helps the plant bloom, while afternoon sunlight oon is harsh and may damage the foliage.

Temperature

The begonia makes an excellent houseplant, as they thrive in temperature ranges between 65 degrees Fahrenheit and 75 degrees Fahrenheit. Begonias are considered annuals or houseplants in colder areas. When growing begonias, make sure that the temperature does not drop dramatically.

The Golden Rules of Watering: Avoiding Root Rot

When watering begonias, the first thing to keep in mind is to avoid overwatering. For some gardeners, especially beginners, watering can feel overwhelming. But, actually, it is not that challenging. The goal is to keep the soil moist, not drenched, which means the soil should be wet when touched.

How to Check if the Begonias Need Water?

A Finger Gently Inserted 1-2 Inches Into the Dark, Rich, Cool, and Damp Potting Soil of a Vibrant, Healthy Begonia Plant — AI Generated Image: Murloft

To check if the begonias need water, insert your finger about 1-2 inches into the soil. If the soil feels cool and damp, it means the plant is well watered. Wait 1-2 days, then use the same technique to see if your begonias need water. On the other hand, if the soil feels dry and hard, water the plants.

How to Water the Begonias Properly?

Do not splash water onto the leaves. Instead, pour the water at the base of the plant. This is the best way to water the plant, especially if they are located in a spot with poor air circulation. Also, make sure not to keep the leaves wet, as it can cause fungal issues or root rot.

Choosing the Right Potting Mix and Container

Begonias need well-draining soil that can retain moisture for the roots to stay healthy. When planting begonias in a container, ensure you add high-quality peat moss or coco-coir-based potting mix.

How to Choose the Right Container for Begonias?

When planting begonias in a container, make sure to get a pot that is quite snug. This is because a large pot can hold more water, which keeps the soil soggy for too long. When repotting, consider upgrading to a pot that is one size bigger than the previous one.

Opt for clay or terracotta pots because they are breathable and allow moisture to evaporate through. When using plastic or ceramic pots, consider watering less often, as these materials retain moisture longer.

Fertilizing Schedules for Better Blooms and Foliage

To ensure your begonias grow well, fertilize them regularly. Include a balanced slow-release fertilizer in the regular care at the time of planting. You can also use a liquid fertilizer once a month when the plant is actively growing.

Pruning and Pinching for Bushier Growth

Begonias don’t need much pruning. However, you can pinch the stem tips if the plant seems leggy. Also, as begonias are self-cleaning plants, you don’t even have to worry about deadheading.

Common Begonia Pests and Diseases, and How to Prevent Them?

Even with the best care, begonias may still be affected by pests and diseases. Some of the common diseases and pests are -

Botrytis rot, also known as bud rot, attacks the plant’s buds and stems, and causes them to rot.
Powdery mildew is a white, powdery coating on the stems and leaves that weakens the plant and stunts its growth. Thus, causing the leaves to turn yellow and leads to premature leaf drop.
Mealybugs and whiteflies suck sap from the plant and can weaken it, while causing yellowing or stunted growth.
Yellowing leaves can occur due to overwatering. So, reduce the frequency and allow the soil to dry between waterings.
Leaf drop is usually caused by stress, which occurs when you change the environment.

How to Control the Pest?

A Man Spraying a Fine, Visible Mist of Insecticidal Soap Onto the Vibrant Green, Glossy Leaves of a Large, Potted Begonia Plant — AI Generated Image: Murloft

Spray insecticidal soap on the plants to kill the insects. Mealybugs can be taken care of with a cotton ball or cotton swab dipped in rubbing alcohol.

Conclusion

Begonias are a rewarding choice of plant that can thrive with the right care. Though they are low-maintenance, they still need care to bloom beautiful flowers. The major factors to consider are choosing the right potting mix and container, as well as minimal watering throughout the growing season.