Exploring the Beauty and Diversity of Rex Begonias: A Guide to the Exquisite Varieties and Care Tips


Rex Begonia is an important plant for many growers, especially those who enjoy cultivating exotic varieties. These tropical plants are native to regions in Asia and are well-known for their stunning foliage. Although they can be grown outdoors in suitable climates, many prefer to keep them indoors, where they can be protected from the elements and enjoyed year-round.

One of the key factors in successfully growing Rex Begonias is providing the right conditions. They thrive in humid environments and prefer temperatures between 60 and 75 degrees Fahrenheit. It’s important to avoid overly moist conditions, as this can lead to root problems and diseases. Mist the leaves regularly and ensure proper irrigation, allowing the soil to dry out slightly between waterings.

When it comes to lighting, Rex Begonias prefer bright, indirect light. Too much direct sunlight can damage their delicate leaves, so it’s best to place them in a spot where they can receive filtered or diffused light. If growing indoors, you can use artificial lights to supplement the natural light.

Fertilizing is an important part of caring for Rex Begonias. Use a balanced, water-soluble fertilizer once a month during the active growing season to promote healthy foliage and vibrant colors. Be sure to follow the instructions on the fertilizer for the correct dosage.

To keep your Rex Begonias looking their best, it’s important to regularly inspect them for any signs of disease or pests. Remove any wilted leaves or stems to prevent the spread of diseases. If you notice any lesions or discoloration on the leaves, it may be an indication of a fungal or bacterial issue. In such cases, it’s best to remove the affected leaves and treat the plant with an appropriate solution to prevent further damage.

Overall, Rex Begonias are a beautiful addition to any home. With proper care and attention, these plants can thrive and provide a year-round display of stunning foliage. Whether you choose to grow them indoors or outside, their unique patterns and colors are sure to add a touch of beauty to your space.

Rex Begonia Care

The Rex Begonia is a popular type of begonia that is known for its stunning foliage. It is native to India and parts of Asia, and it is named after the explorer Rex Begonia who first discovered it.

Rex Begonias have unique patterns and colors on their leaves, which can range from deep green to vibrant red. They are often variegated and may have splashes of silver, pink, or purple. The leaves are thick and textured, making them a focal point in any indoor garden.

When it comes to caring for Rex Begonias, there are a few key factors to keep in mind. First, they prefer higher humidity levels, so it’s important to provide them with regular misting or use a humidifier. They also require bright, indirect light, so placing them near a window or in a well-lit room is ideal. However, they should be kept away from direct sunlight, as this can cause damage to their delicate leaves.

Rex Begonias grow best in a well-draining potting medium. A soil mix that includes peat moss and perlite is generally recommended. They are sensitive to overwatering, so it’s important to water them only when the top inch of soil feels dry. When watering, be sure to thoroughly saturate the soil and allow any excess water to drain away.

Fertilizing Rex Begonias is also important for their growth. They can be fed with a water-soluble fertilizer once a month during the growing season, typically from spring to summer. It’s important to dilute the fertilizer to half the recommended strength to avoid over-fertilizing. Rex Begonias are also sensitive to fertilizer burn, so it’s important to follow the instructions on the fertilizer packaging.

Repotting Rex Begonias is best done in the spring when they are actively growing. They can be divided by separating their rhizomes and planting them in separate containers. This also helps to maintain their compact growth habit. Regularly removing any dead or damaged leaves will also promote healthier growth and prevent disease and pest infestation.

Overall, Rex Begonias are considered to be relatively low-maintenance plants. As long as they are provided with the right amount of light, water, and nutrients, they can thrive for many years. They are a popular choice among indoor plant growers due to their unique and stunning foliage.

Rex Begonia

Rex begonias (Begonia rex) are a group of rhizomatous begonias that are known for their colorful and textured foliage. They are native to parts of Asia and are considered to be some of the most striking plants in the begonia family. Rex begonias are often grown as potted plants and are popular among indoor growers due to their ornamental value.

Rex begonias have unique requirements when it comes to their care. They tend to prefer bright, indirect light and thrive in well-drained soil. They should be watered regularly, but overwatering can lead to root rot. They also require humidity, which can be achieved by misting the plant or placing it on a tray of water and stones.

These begonias are not frost-tolerant and should be protected from cold temperatures. They are often grown exclusively indoors, especially in areas with harsh winters. Rex begonias can go dormant in the winter, and during this time, their watering and fertilizing needs should be reduced.

Pests can be a problem for rex begonias, with whiteflies and spider mites being the most common. Signs of pest infestation include white spots on the leaves, webbing, and lesions. To control pests, growers can use insecticidal soap or natural solutions such as neem oil.

Propagation of rex begonias can be done through leaf cuttings or rhizome division. The rhizomes, which are knobby and look similar to ginger roots, can be divided and potted separately to create new plants. These plants are also known to readily cross with other begonia species, leading to a wide variety of rex begonia hybrids.

In conclusion, rex begonias are popular indoor plants that are prized for their brightly colored and textured foliage. They have specific care requirements that include proper lighting, watering, and fertilizing. While they can be susceptible to pests and diseases, with proper care and attention, these stunning plants can thrive and beautify any indoor space.

Begonia Rex Varieties

The Begonia Rex is a popular group of rhizomatous begonias that are known for their stunning foliage. They are a result of crosses between various Begonia species and are considered to be one of the most beautiful indoor plants.

The leaves of Begonia Rex varieties come in a wide range of colors and patterns. They typically have medium to large leaves with white spots or margins, and some varieties even have silver or burgundy foliage. The stems of these begonias are also quite unique, with a rhizome-like structure that grows horizontally and produces new leaves from the center.

Begonia Rex varieties are potted plants and can thrive in both indoor and outdoor conditions. However, they are best grown indoors as the summer heat can be too harsh for them. They require medium to high levels of light to produce healthy growth, but direct sunlight should be avoided as it can damage the leaves.

Proper irrigation is important for Begonia Rex varieties, as they are prone to root rot. They should be watered thoroughly when the top inch of soil feels dry, but overwatering should be avoided. A well-draining potting mix and regular application of fertilizer during the growing season greatly benefit these plants.

Begonia Rex varieties are relatively low-maintenance plants but may require some management when it comes to pests and diseases. They are susceptible to powdery mildew and spider mites, so regular inspection and treatment with appropriate solutions is important. Taking preventive measures, such as misting the leaves to increase humidity, can help to keep these issues at bay.

In summary, Begonia Rex varieties are a stunning group of rhizomatous begonias that are known for their beautiful foliage. They are best grown indoors and require medium to high levels of light. Proper irrigation and fertilizer application are important for their healthy growth. Pest and disease management is also important to ensure their well-being. With the right care, these begonias can become a focal point in any indoor space.

Rex Begonia Problems and Solutions

Rex Begonias are beautiful and unique plants with typically colorful leaves and a variety of patterns. However, like any plant, they can encounter problems that may affect their growth and overall health. In this section, we will discuss some common issues that Rex Begonia growers may encounter and provide solutions on how to manage them.

1. Lack of Sunshine: Rex Begonias are known for their preference of bright, indirect light. However, excessive exposure to direct sunlight can cause leaf scorching and damage. It is important to place your Rex Begonia in a location where it can receive filtered sunlight, typically near a north or east-facing window.

2. Variegated Leaf Margins: Some Rex Begonias have variegated leaf margins, which make them more susceptible to leaf burn. To prevent this issue, make sure to keep the plant away from cold drafts or sudden temperature changes.

3. Lack of Rhizome Growth: One common problem with Rex Begonias is a lack of rhizome growth. If you notice that your plant’s rhizomes are not actively growing, it may be due to a lack of nutrients. Make sure to fertilize your Rex Begonia regularly using a high-quality fertilizer that is balanced and specifically formulated for houseplants.

4. Disease and Pest Infestation: Rex Begonias can be susceptible to various diseases and pests, including fungal leaf spot, powdery mildew, and spider mites. To prevent and manage these issues, make sure to provide adequate air circulation, avoid overwatering, and regularly inspect your plants for any signs of pests or diseases. If you spot any problems, you can use appropriate fungicides or insecticides to treat the issues.

5. Draining and Temperature Requirements: Rex Begonias prefer well-draining soil and do not tolerate waterlogged conditions. Make sure to use a well-draining potting mix and water your plants only when the top inch of soil feels dry. In terms of temperature, Rex Begonias thrive in temperatures ranging from 60 to 75 degrees Fahrenheit (15 to 24 degrees Celsius).

In summary, Rex Begonias are beautiful and unique plants that require specific care and management. By providing them with the right amount of light, nutrients, and appropriate growing conditions, you can enjoy their stunning foliage and keep them healthy for years to come.

✿ Read More About Foliage Plants.

Dr Heidi Parkes

By Dr Heidi Parkes

Senior Information Extension Officer QLD Dept of Agriculture & Fisheries.