Begonia Rex Care Infographic

Begonia Rex is a gorgeous plant that can add serious style to your home or garden. Its intricate leaves and showy flowers are sure to make a statement.

This plant profile will give you all the details you need to care for this plant, from planting to watering to pruning. So if you’re looking for a unique and beautiful addition to your garden, read on!

What Is Begonia Rex?

Begonia rex is a begonia species native to tropical and subtropical regions of Asia, Africa, and South America. The plant has large, colorful leaves and flowers, making it a popular choice for gardens and indoor plants. Begonia rexs are available in various colors, including red, pink, white, and orange.

Begonia Rex Care

Begonia rex is a beautiful and popular plant that is easy to care for. Though native to Central and South America, these plants have become quite popular worldwide as houseplants. If you’re thinking about adding this plant to your home, here is what you need to know about care and maintenance.

– Water Requirements

There are a few things you need to know about watering Begonia rex. First, it’s important to note that the plant is native to tropical and subtropical climates.

Begonia Rex Water Requirements

This means that they are used to high humidity and plenty of moisture. As a result, they will not do well in dry conditions. When watering your plant, water it thoroughly and evenly. Allow the soil to become evenly moist but not soggy or waterlogged.

If the air in your home is arid, you may want to mist your plant daily with a spray bottle filled with water. This will raise the humidity level around the plant and prevent the leaves from drying out. 

In general, you should water it about once a week. However, you may need to water them more frequently during the hottest summer months. Be sure to check the soil before watering and only water if the top inch or so of soil is dry.

– Light Requirements

Ideally, you should place it in an east- or west-facing window where they will receive bright, indirect light. Too bright light will stunt the growth. If direct sunlight is unavoidable, it’s best to filter the light with a sheer curtain or blind. Too much direct sun can scorch the plant’s leaves, causing them to turn brown and bitlle.

While the plant will tolerate lower light levels, it will not flower as profusely in these conditions. If you hope to see lots of blooms, give your plant bright, indirect light. You can supplement with artificial grow lights if you lack the ideal light requirements. The right light makes it relatively easy to care for and beautiful addition to any home.

– Soil Requirements

To ensure that your plant grows healthy and flourishes, it is important to provide it with the right soil type. The plant does best in well-drained, loamy soils rich in organic matter.

The soil should also be slightly acidic, with a pH between 6.0 and 6.5. If your soil does not meet these requirements, you can amend it by adding organic matter or by using a potting mix specially formulated for Begonias.

When choosing a potting mix for your plant, it is important to ensure it is well-drained. The mix should also contain a good amount of organic matter, such as compost or peat moss. You can also add a small amount of perlite to the mix to help drainage. If growing it in a container, ensure the pot has drainage holes in the bottom to allow excess water to escape.

Once you have chosen the perfect potting mix, it is suggested to water the plant regularly. The soil should be kept moist but not waterlogged. Begonias are susceptible to root rot, so it is important to avoid overwatering. Allow the top inch of soil to dry out before watering again.

– Temperature Requirements

The ideal temperature range for the plant is between 60 and 80 degrees Fahrenheit. The plant can tolerate temperatures as low as 50 degrees Fahrenheit, but it will start to experience stress at this temperature. If the temperature drops below 50 degrees Fahrenheit, the leaves will begin to turn brown and drop off.

When grown indoors, you should keep your plant away from drafts. This plant does not like sudden temperature changes, so it is essential to keep the temperature consistent. The leaves will turn brown and drop off if it is exposed to drafts.

– Humidity Requirements

One of the most critical aspects of its care is humidity. These plants prefer high humidity levels, so providing them with a humid environment is essential. One way to do this is to mist the plant leaves regularly. Another option is to place the pot on a pebble tray filled with water. This will help to create a humid microclimate around the plant.

If the air in your home is dry, you may need to take additional measures to provide the humidity it needs. One option is to use a humidifier in the plant’s room. By taking these steps, you can ensure that your Begonia plant gets the humidity it needs to thrive.

– Fertilizing Requirements

The good news is that it is not a particularly demanding plant when it comes to fertilizer. You can probably get away with fertilizing your plant a few times yearly. The best time to fertilize it is during the growing season, which runs from spring through fall. During this time, your plant will actively grow and benefit from the extra nutrients fertilizer provides.

Fertilizing Requirements

When choosing a fertilizer for your Begonia plant, look for one labeled “for use on foliage plants.” These fertilizers are typically lower in nitrogen than other types, which is ideal for the plant. You should apply fertilizer to your plant about once a month during the growing season.

However, if you notice that your plant looks particularly unhealthy or yellowing, you may need to fertilize more frequently. If you do over-fertilize your plant, you may see that the leaves start to turn brown and brittle. If this happens, stop fertilizing and flush the plant with plenty of water to remove any excess fertilizer from the soil.

– Pruning

The pruning requirements of the plant are also not very demanding. However, like with any plant, if you want it to stay healthy and look its best, some basic pruning is necessary. The first step in pruning is removing dead, diseased, or damaged leaves or stems. These can be unsightly and harbor pests or diseases that can harm the rest of the plant.

Once you have removed these, you can focus on shaping the plant. Begonias Rex is not typically pruned for shape, but if you want to tidy up the plant or encourage new growth, you can trim back the stems. Cut them to just above a leaf node, where fresh leaves will sprout.

You can also prune your plant for size if it is too large for space. Simply cut back the longest stems to the desired length. Begonias Rex is a fast grower, so you may need to do this every few months to keep the plant within bounds. Pruning is important to your plant care, but it is not difficult to do. Following these simple tips can keep your plant looking its best.



There are four primary methods to propagate this plant: stem cuttings, leaf cuttings, rhizome division, and seed germination.

– Stem Cutting

Stem cuttings are the most common propagation method for this plant species. To take a stem cutting, simply cut a 4-6 inch section of stem from a healthy plant, remove the leaves from the bottom half of the branch, and place the stem in a pot of moistened planting mix. The cutting will typically root within 4-6 weeks. Once the plant has developed a good root system, it can be transplanted to its permanent location.

To increase your chances of success, it is best to take stem cuttings from actively growing plants. Also, make sure to use a sharp knife or pruning shears when taking a cutting, as this will help to prevent the plant from losing too much water. Finally, keep the cutting moist until it has rooted by misting it with water or placing it in a plastic bag.

If you are looking for an easy way to propagate begonias, stem cuttings are the way to go. With a bit of care, you should be able to grow new plants successfully from stem cuttings in no time .

– Leaf Cutting

You can also use leaf cuttings to propagate these plants. To take a leaf cutting, snip a healthy leaf from the plant, including a small section of the stem. Place the leaf in a pot of moistened planting mix, burying the stem portion slightly. The cutting will typically root within 4-6 weeks. Once implanted, Begonia rex plants can be transplanted into individual pots.

Leaf Cutting

Be sure to keep the soil moist while the cutting is rooting. An easy way to do this is to place the pot in a plastic bag to help retain moisture. Once the plant has rooted and grown, it can be removed from the plastic bag.

– Rhizome Division

Rhizome division is another method of propagation that can be used for Begonia plants. To divide the rhizomes, carefully dig up the entire plant and gently pull it apart into two or more sections, ensuring each section has at least one healthy shoot and root system. Plant the divisions in separate pots of moistened planting mix.

When rhizome division is done in late summer or early fall, it can help to increase the number of blooms a plant produces the following season, after dividing the rhizomes, water the plants well and place them in a bright location out of direct sunlight.

In late fall or early winter, when the days are shorter and the nights are longer, begonias need about 12 to 14 hours of uninterrupted darkness each day to bloom well the following spring.

To provide this, you can either move the plants to a dark closet or cover them with a box or black garbage bag each evening. Once the plants have been subjected to at least six weeks of this intermittent, uninterrupted darkness, they can be moved back to their regular location.

– Seed Germination

Finally, you can also propagate these plants from seed. To do this, sow the seeds in a pot of moistened planting mix and place the pot in a warm, bright location.

Keep the soil moist, and the seeds should germinate within 4–6 weeks. Once they have germinated, thin out the seedlings so that only one or two plants remain per pot. Transplant the seedlings into larger pots once they have grown to about 4 inches tall.

When propagating these Begonia plants, using a sterile potting mix is essential, and sterilizing your tools and equipment beforehand. This will help prevent the spread of disease. Additionally, these plants are susceptible to root rot, so make sure the pots have drainage holes in the bottom and do not allow the plants to sit in water.


This plant is not particularly finicky care-wise. However, it has been associated with several common problems, including:

– Browning or Curling of Leaves

Browning or curling of leaves is a common problem in plants. The leading causes of this problem are incorrect watering, low humidity, or pests. Improper watering is the most common cause of browning or curling leaves in plants. If the plant is watered too often, the leaves will start to brown and curl.

If you notice that the leaves of your plant are starting to brown and curl, you should check the plant’s watering, humidity, and pest situation. If you correct the problem causing the leaves to brown and curl, the leaves should return to their normal color and shape.

– Leaf Spotting

Leaf spot is a common problem in these plants. The spots are usually caused by fungal or bacterial diseases but can also result from environmental stressors such as excessive sunlight or drought. Leaf spot symptoms include small, dark lesions on the leaves that may enlarge and coalesce, eventually causing the leaves to be yellow and drop off.

Leaf Spotting

The plants are susceptible to several fungal diseases, including the Alternaria leaf spot, Phyllosticta leaf spot, and Septoria leaf spot. These diseases can be controlled with the use of fungicides.

Bacterial leaf spot is another common disease that affects your plants. The bacteria causing this disease are often spread by water, so it is essential to water your plant carefully and avoid getting the leaves wet.

Bacterial leaf spots can be controlled with the use of bactericides. Environmental stressors such as excessive sunlight or drought can cause leaf spots on these plants. If you suspect your plant is stressed, try to provide it with more water or shade. If the leaf spots are severe, you may need to prune off the affected leaves.

– Stem Rot

Stem rot is a common problem in begonias. The problem is caused by several different fungi, including Rhizoctonia solani, Pythium ultimum, and Phytophthora species. These fungi attack the stem at the base of the plant, causing the stem to rot away. The leaves of the plant will then turn yellow and fall off, eventually leading to the death of the plant.

To prevent stem rot, it is essential to water your begonias carefully. Water in the morning so the leaves have time to dry off before nightfall. Avoid getting water on the stems of the plants, as this can encourage the growth of fungi.

– Powdery Mildew

Powdery mildew is one of the most common plant diseases, affecting a wide range of hosts. The disease is characterized by white, powdery fungal growth on the surface of leaves, stems, and flowers. Powdery mildew can weaken the plant and reduce its ability to produce food. In severe cases, the fungus can kill the plant.

Powdery mildew is caused by a group of fungi called Erysiphaceae. These fungi are obligate parasites, requiring a living host to survive. The fungi grow on the plant’s surface, feeding on the sap. As they feed, they produce spores dispersed by wind or water to other plants.

– Root Rot

Root rot is another severe problem for plants. The roots of the plant become rotted and eventually die. This can happen for several reasons, including over-watering, poor drainage, or damage to the roots.

There are a few things that you can do to try to save your plant if it has root rot. First, remove the plant from its pot and inspect the roots. If they are black and mushy, then they are probably beyond saving. However, if some healthy, white roots remain, you can try to save the plant by trimming away the rotted roots and replanting them in a new pot with a fresh, sterile mix.

– Whiteflies

As one of the most popular houseplants, this plant is susceptible to attack by whiteflies. These sap-sucking insects not only damage the plant by feeding on its tissue but also spread diseases. Whiteflies are most active in warm weather and can reproduce quickly, so infestations can get out of control quickly if left untreated.

You can do several things to eliminate whiteflies on plants, including insecticidal soap, neem oil, or horticultural oil. You can also try using yellow sticky tape to catch the adult whiteflies before they have a chance to lay eggs. If you have a serious infestation, you may need to discard the plant to prevent the whiteflies from spreading to other plants.

– Mealybugs

Mealybugs are one of the most challenging pests to control in these plants. They are small, wingless insects that suck the sap out of plants. Mealybugs can cause leaves to be yellow and drop off, and they can also transmit plant diseases.

The best way to control mealybugs is to remove them from the plant with a cotton swab dipped in rubbing alcohol. You can also try spraying the plant with insecticidal soap or horticultural oil. You may need to use an insecticide if you have a serious infestation.

– Aphids

Aphids are small, pear-shaped insects ranging in color from green to black. They are often found feeding on the undersides of leaves, where they suck the sap from plants. Aphids can cause damage to the plant by weakening the plant and causing stunted growth. Aphids can cause your plant’s leaves to curl and turn yellow in severe infestations.

You can control aphids by spraying the plant with water or using an insecticide. Be sure to follow the instructions on the label when using any pesticide. You can also try placing a yellow sticky trap near your plant to help catch aphids.

– Thrips

Thrips are tiny, winged insects that feed on the sap of plants. They are a particular problem for begonias, as they can cause the leaves to curl up and turn brown. You may also damage the flowers.

Thrips in a Leaf

To remove thrips, spray your plant with water to knock them off. Then, apply an insecticide that is specifically designed to kill thrips. Be sure to follow the instructions on the label, as some insecticides can harm plants. You may need to reapply the insecticide every few days until the thrips are gone.

If you have a severe infestation, you may need to throw out the plant and start over. However, you can avoid thrips in the future by keeping your begonias well-watered and applying an insecticide at the first sign of problems.

– Root-Knot Nematodes

Root-knot nematodes are one of the most serious pests of plants. They are tiny, worm-like creatures that invade plant roots and cause them to become swollen and distorted. The damage caused by root-knot nematodes can be very severe and ultimately kill the plant.

There are several ways to control root-knot nematodes. One is to remove infested plants from the garden and destroy them. Another is to treat the soil with a nematicide, a chemical that kills nematodes. You can also avoid planting your Begonia plants in areas where root-knot nematodes are known to be present.

Frequently Asked Questions

– How Big Will a Begonia Rex Get?

Begonias rex are not particularly large plants, often used as houseplants or in small gardens. They typically grow to be about 9 inches tall and 5 inches wide. However, some varieties of Rex begonia can get much larger, so it is important to check the size of the plant before purchasing it.

– What Is the Average Life of Begonia Rex?

The average lifespan of a Begonia rex is 2-3 years. However, these plants can live up to five years or more with proper care. Begonia rexs are native to tropical regions and do best in warm, humid environments. If you live in a cold climate, it’s best to grow your Begonia rex indoors.

– Does Begonia Rex Act as an Air Purifier?

Many people believe that Begonia rexs can act as air purifiers, helping to remove harmful toxins and pollutants from the air. Although no scientific evidence supports this claim, Begonia rexs may help improve indoor air quality. Additionally, these plants are known for their beautiful foliage and can add a touch of elegance to any room.

– Can Rex Begonia Survive in Water?

Yes, Begonia rexs can survive in water. They thrive in moist conditions and can even tolerate being submerged in water for short periods. However, it is important to note that Begonia rexs need well-drained soil to prevent root rot.

Therefore, if you are growing them in water, change the water regularly. Begonia rexs are also sensitive to chlorine, so if you use tap water, let it sit out in a container such as a bowl for 24 hours before watering your plants. This gives the chlorine time to evaporate.

– What Types of Pots Are Perfect for Rex Begonias?

There are a few things to consider when choosing a pot for your Rex Begonia plant, such as the size and type of pot. Rex Begonias do best in small to medium-sized pots that have drainage holes. You can use plastic, clay, or ceramic pots. Avoid using metal pots, as they can get too hot in warm weather and damage the roots.


That’s all there is to know about Begonia Rex.

It is a beautiful flowering plant that can be grown both indoors and outdoors:

  • The plant has large, showy leaves that can add color and interest to any room.
  • This plant is easy to care for and thrives in bright, indirect light. Water it regularly, making sure the soil remains moist but not wet.
  • Fertilize your plant every two weeks with a balanced fertilizer to promote healthy growth.
  • In the colder months, move your plant inside to a sunny spot near a window. By following basic care tips, one can grow very perfect begonia plants.

This profile has given you all the information you need to care for, from propagating it in the ground or a pot to watering and fertilizing it. We hope you enjoyed this plant as much as we do!

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